Expand
Contents
- The climate of Green River
- The best time to visit Green River
- The worst time to visit Green River
- Spring weather in Green River
- Summer weather in Green River
- Autumn weather in Green River
- Winter weather in Green River
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Green River
Green River, located in Wyoming, USA, features a mid-latitude steppe, classified as a Köppen BSk climate. BSk climates are typically characterized by cold winters and warm summers, with significant temperature variations occurring throughout the year.
Looking closely into the temperature data, highs hit a peak of 81.5°F (27.5°C) in July and dip to a low of 10.8°F (-11.8°C) in January. Low temperatures follow a similar trend, soaring to 60.4°F (15.8°C) in July and dropping to an icy 11.5°F (-11.4°C) in January. Relative humidity hovers around a high of 84% in January and a low of 31% in July and August.
Weather phenomena in Green River exhibit fascinating patterns. Snowfall, which can be seen from 13.5 days in December to zero days in July and August, is clearly a defining characteristic of the local weather. The region receives 4.37" (111mm) of snow in January and December and goes months without any snow from June to September, indicating a distinct winter season.
Sunshine hours, ranging from 5.9 hours in December and January to a sun-soaked 11.8 in July and August, varies with the changing seasons. While the longest daylight hours are seen in June with 15.1 hours, the shortest are in December with just 9.2 hours. Wind, on the other hand, varies from a mild 8.8mph (14.2km/h) in July to 12.2mph (19.6km/h) in April creating a diverse mix of breezy and calm periods.
Looking closely into the temperature data, highs hit a peak of 81.5°F (27.5°C) in July and dip to a low of 10.8°F (-11.8°C) in January. Low temperatures follow a similar trend, soaring to 60.4°F (15.8°C) in July and dropping to an icy 11.5°F (-11.4°C) in January. Relative humidity hovers around a high of 84% in January and a low of 31% in July and August.
Weather phenomena in Green River exhibit fascinating patterns. Snowfall, which can be seen from 13.5 days in December to zero days in July and August, is clearly a defining characteristic of the local weather. The region receives 4.37" (111mm) of snow in January and December and goes months without any snow from June to September, indicating a distinct winter season.
Sunshine hours, ranging from 5.9 hours in December and January to a sun-soaked 11.8 in July and August, varies with the changing seasons. While the longest daylight hours are seen in June with 15.1 hours, the shortest are in December with just 9.2 hours. Wind, on the other hand, varies from a mild 8.8mph (14.2km/h) in July to 12.2mph (19.6km/h) in April creating a diverse mix of breezy and calm periods.
The best time to visit Green River
The optimal time for a visit to Green River hinges on the visitor's weather preferences. For sun lovers and those keen on enjoying outdoor activities to their fullest extent, the months of June, July, and August are perfect. During this period, daylight extends to its longest between 14.8 hours and 15.1 hours, while the generous sunshine clocks around 11.7 to 11.8 hours.
Visitors during this phase will find temperatures in the range from highs of 70.3°F (21.3°C) to 81.5°F (27.5°C) and lows from 51.3°F (10.7°C) to 60.4°F (15.8°C) making it the most pleasantly warm period in the year. These are also the least humid months with relative humidity around 31% to 36%, providing a dry and comfortable environment.
Visitors during this phase will find temperatures in the range from highs of 70.3°F (21.3°C) to 81.5°F (27.5°C) and lows from 51.3°F (10.7°C) to 60.4°F (15.8°C) making it the most pleasantly warm period in the year. These are also the least humid months with relative humidity around 31% to 36%, providing a dry and comfortable environment.
The worst time to visit Green River
Without any doubt, the least favorable period to visit Green River would be the freezing winter months from December to February. During these months, the high temperatures barely reach above freezing with the maximum temperature fluctuating from 25.7°F (-3.5°C) to 39.7°F (4.3°C), while the lows fall between 10.8°F (-11.8°C) and 24.3°F (-4.3°C).
Snowfall is a common occurrence throughout these months with as much as 6.14" (156mm) in March and snow falling on up to 13.5 days in December. The relative humidity is highest in this season, peaking at 84% in January which exacerbates the chill factor.
Snowfall is a common occurrence throughout these months with as much as 6.14" (156mm) in March and snow falling on up to 13.5 days in December. The relative humidity is highest in this season, peaking at 84% in January which exacerbates the chill factor.
Spring weather in Green River
Spring, which spans from March to May, sees a gradual warming trend. High temperatures range from 39.7°F (4.3°C) in March to a more inviting 60.3°F (15.7°C) in May, while lows rise from 24.3°F (-4.3°C) to 41.4°F (5.2°C). The rainfall marginally increases from 1.18" (30mm) to 1.5" (38mm) but snowfall starts to decrease, making way for clearer days.
Visibility holds constant at 6 miles throughout, and the duration of daylight increases from 12 hours in March to a sizable 14.5 hours in May. This period also sees a decrease in cloud coverage, dropping from 36% in March to 26% in May, which gives clearer skies for outdoor activities.
Visibility holds constant at 6 miles throughout, and the duration of daylight increases from 12 hours in March to a sizable 14.5 hours in May. This period also sees a decrease in cloud coverage, dropping from 36% in March to 26% in May, which gives clearer skies for outdoor activities.
Summer weather in Green River
Summer in Green River, from June to August, is undoubtedly the warmest time of the year. With high temperatures dancing around from 70.3°F (21.3°C) to 81.5°F (27.5°C) and lows from the comfortable range of 51.3°F (10.7°C) to 60.4°F (15.8°C). Rainfall drops to its minimum and the days are longer, with daylight peaking at 15.1 hours in June.
Autumn weather in Green River
The Autumn months, September to November, herald the transition from the warm summer to the chilly winter. The high temperature rapidly dips from 70.3°F (21.3°C) to 38.7°F (3.7°C) while lows follow suit, dropping from 51.3°F (10.7°C) to 23.9°F (-4.5°C). The periods of sunshine lessen from 10.7 hours to 6.9 hours with the daylight hours also contracting from 12.5 hours to 9.9 hours.
Winter weather in Green River
Winter in Green River, which includes December, January, and February, is an icy period of the year. Maximum temperatures peak at the freezing point, wavering between 25.7°F (-3.5°C) and 39.7°F (4.3°C), while minimum temperatures drop to bone-chilling lows from 10.8°F (-11.8°C) to 24.3°F (-4.3°C). The snowfall, peaking at 4.37" (111mm), adds to the severity of the winter. Limited hours of sunshine and short daylight exposure become characteristic features of these cold months.
Weather in January
The winter frost envelops Green River, Wyoming, in January, as temperatures plunge to their lowest at this time of the year. Transitioning from a colder December, January experiences a slight increase in average low temperature at 10.8°F (-11.8°C) while boasting an average high of 26.6°F (-3°C). Weather in January »
Weather in February
February marks the continuation of winter weather in Green River, Wyoming, boasting a slightly warmer atmosphere than January. The climate experiences a noticeable rise in minimum and maximum temperatures, averaging 13.5°F (-10.3°C) and 28.8°F (-1.8°C) respectively. Weather in February »
Weather in March
Weather in March witnesses a distinct shift towards spring in Green River. As the city emerges from the cold winter, the temperature rises significantly from February's average, with the mercury reading between 24.3°F (-4.3°C) and 39.7°F (4.3°C). Weather in March »
Weather in April
April brings a pronounced change in Green River's weather with a transition from the raw, cold winter to warmer and rejuvenating spring weather. As the harsh winter subsides, temperatures climb significantly high to 48.7°F (9.3°C) and low to 31.5°F (-0.3°C) compared to March. Weather in April »
Weather in May
The last month of the spring, May, is a mild month in Green River, Wyoming, with an average temperature ranging between min 41.4°F (5.2°C) and max 60.3°F (15.7°C). The beginning of May marks a shift in the average high-temperature, moving from April's chilly 48.7°F (9.3°C) to a mild 60.3°F (15.7°C). Weather in May »
Weather in June
June, the first month of the summer in Green River, is a moderately hot month, with an average temperature fluctuating between 52°F (11.1°C) and 73.9°F (23.3°C). Green River sees a rise in temperature during June, with average high-temperatures transitioning from a refreshing 60.3°F (15.7°C) in May to a warm 73.9°F (23.3°C). Weather in June »
Weather in July
July exhibits peak summer conditions in Green River, Wyoming, with temperatures soaring high. An increase in temperature to the year's highest average of 81.5°F (27.5°C) (high) and 60.4°F (15.8°C)(low) delineate the apex of summer. Weather in July »
Weather in August
In Green River, Wyoming, while August sees continuity in the summer season, it also hints at the approaching autumn. The weather experiences a slight dip in the average high temperature from July's peak to 79.3°F (26.3°C). Rainfall rises marginally to 0.55in yet fails to disrupt the bright sunny days and extensive daylight hours, synonymous with summer. Weather in August »
Weather in September
September indicates the onset of autumn in Green River, Wyoming, characterised by a significant drop in temperatures. The weather becomes noticeably milder from the preceding August, as maximum temperatures fall to 70.3°F (21.3°C) and minimum to 51.3°F (10.7°C). Weather in September »
Weather in October
Green River, Wyoming, witnesses the full swing of autumn in October. A pronounced difference is seen, particularly in temperature that dips to a significantly cooler average high of 52.5°F (11.4°C) and low of 36°F (2.2°C), compared to September. Weather in October »
Weather in November
November signifies the onset of winter in Green River, Wyoming, as temperatures plummet and snowfall regains prominence. A steep drop in average temperatures, with highs averaging 38.7°F (3.7°C) and lows around 23.9°F (-4.5°C), mark a colder qtr2 after a noticeably warmer October. Weather in November »
Weather in December
Winter takes a firm hold in Green River, Wyoming, during December. Temperatures continue their downward trend since November, with average lows of 11.5°F (-11.4°C), coldest for the year, and highs at 25.7°F (-3.5°C). An additional increase in snowfall underpins the grip of winter, as shifts in the frequented weather pattern signify the city's complete move into the cold season. Weather in December »
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the most humid month?
January is the most humid month, with an average relative humidity of 84%.
How much does it rain?
In Green River, Wyoming, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.
When does it snow?
Months with snowfall are January through June, September through December.
How much does it snow?
Throughout the year, there are 75.5 snowfall days, and 30.16" (766mm) of snow is accumulated.
What are the months with the least sunshine?
The months with the least sunshine are January and December, with an average of 5.9h of sunshine.
What is the month with the lowest UV index?
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Green River.
What is the snowiest month?
March is the month with the most snowfall. Snow falls for 13 days and accumulates 6.14" (156mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 13.8 days and typically aggregates up to 1.5" (38mm) of precipitation.
When are the longest days?
With an average of 15h and 6min of daylight, June has the longest days of the year.
What is the warmest month?
July, with its average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 60.4°F (15.8°C), holds the record as the warmest month.
What are the least humid months?
July and August, with an average relative humidity of 31%, are the least humid months.
What is the driest month in Green River?
July is the month with the least rainfall. Rain falls for 7.8 days and accumulates 0.47" (12mm) of precipitation.
When it does not snow?
July and August are months without snowfall.
What is the month with the most sunshine?
The months with the most sunshine are July and August, with an average of 11.8h of sunshine.
When is the highest UV index?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the coldest month?
December, having an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 11.5°F (-11.4°C), is the coldest month.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Green River, WY
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure
Green River, WY
- Average pressure in January:
30.28"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.24"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Green River, WY
- Average wind speed in January:
9.4mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.5mph - Average wind speed in April:
12.2mph - Average wind speed in May:
11.1mph - Average wind speed in June:
10.6mph
- Average wind speed in July:
8.8mph - Average wind speed in August:
8.7mph - Average wind speed in September:
9.4mph - Average wind speed in October:
10.7mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity
Green River, WY
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall
Green River, WY
- Average rainfall in January:
0.67" - Average rainfall in February:
0.79" - Average rainfall in March:
1.18" - Average rainfall in April:
1.42" - Average rainfall in May:
1.5" - Average rainfall in June:
0.79"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.55" - Average rainfall in September:
0.63" - Average rainfall in October:
0.94" - Average rainfall in November:
0.67" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days
Green River, WY
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
8.7 days - Average rainfall days in April:
11.4 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
8.3 days
- Average rainfall days in July:
7.8 days - Average rainfall days in August:
7.5 days - Average rainfall days in September:
7.2 days - Average rainfall days in October:
7.2 days - Average rainfall days in November:
5 days - Average rainfall days in December:
4.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).
Average snowfall
Green River, WY
- Average snowfall in January:
4.37" - Average snowfall in February:
4.65" - Average snowfall in March:
6.14" - Average snowfall in April:
4.49" - Average snowfall in May:
0.87" - Average snowfall in June:
0.08"
The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").
Average snowfall days
Green River, WY
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
13.1 days - Average snowfall days in March:
13 days - Average snowfall days in April:
7.8 days - Average snowfall days in May:
1.8 days - Average snowfall days in June:
0.3 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.2 days - Average snowfall days in October:
4.2 days - Average snowfall days in November:
8.3 days - Average snowfall days in December:
13.5 days
The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Green River, WY
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 0min - Average sunshine in March:
8h and 1min - Average sunshine in April:
10h and 1min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 5min - Average sunshine in September:
10h and 4min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 5min - Average sunshine in December:
5h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days
Green River, WY
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
13.4 days - Average sunshine days in June:
18.7 days
- Average sunshine days in July:
19.5 days - Average sunshine days in August:
18.7 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
16.4 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).
Average UV index
Green River, WY
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover
Green River, WY
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility
Green River, WY
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Green River, Wyoming, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location