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Contents
- The climate of Jackson
- The best time to visit Jackson
- The worst time to visit Jackson
- Spring weather in Jackson
- Summer weather in Jackson
- Autumn weather in Jackson
- Winter weather in Jackson
- 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
A calm and clear river and vast green fields approaching the iconic white mountains within the Grand Teton National Park in Jackson, Wyoming
The climate of Jackson
The climatic conditions in Jackson, Wyoming, are characterized by the Köppen climate classification: Dfc, which implies a Subarctic climate characterized by severe winters, non-existent dry season, and cool summer. The geographical position deep within the USA 's inland makes its weather quite distinctive.
The variation in temperature is rather remarkable, with the highest highs averaging 73.4°F (23°C) in July and the lowest lows touching 4.8°F (-15.1°C) in January. Observations also reflect a relative humidity curve fluctuating from the lowest at 50% in July and August to the highest at 94% in February. Rainfall shows less drama, with the highest rainfall being 3.54" (90mm) in February and the lowest of 1.34" (34mm) in August. Snowfall is another significant element, with copious quantities from 0.12" (3mm) in August to a maximum of 29.33" (745mm) in February.
Indicative of its severe winters, Jackson has more snowfall days than most, peaking at 24.8 days in March and virtually disappearing to 0.4 days in July. Daylight hours have a narrow range from 13.5 hours in April to 9 hours in December. Sunshine hours present a more pronounced swing from 3.4 hours in February to 11.6 hours in July. Interestingly, Jackson maintains a relatively consistent low UV Index of 1 from January to March, elevating gradually reaching a peak of 5 in July.
The variation in temperature is rather remarkable, with the highest highs averaging 73.4°F (23°C) in July and the lowest lows touching 4.8°F (-15.1°C) in January. Observations also reflect a relative humidity curve fluctuating from the lowest at 50% in July and August to the highest at 94% in February. Rainfall shows less drama, with the highest rainfall being 3.54" (90mm) in February and the lowest of 1.34" (34mm) in August. Snowfall is another significant element, with copious quantities from 0.12" (3mm) in August to a maximum of 29.33" (745mm) in February.
Indicative of its severe winters, Jackson has more snowfall days than most, peaking at 24.8 days in March and virtually disappearing to 0.4 days in July. Daylight hours have a narrow range from 13.5 hours in April to 9 hours in December. Sunshine hours present a more pronounced swing from 3.4 hours in February to 11.6 hours in July. Interestingly, Jackson maintains a relatively consistent low UV Index of 1 from January to March, elevating gradually reaching a peak of 5 in July.
The best time to visit Jackson
Given the weather patterns, the most favored time to visit Jackson would be from late June to the end of August. During these months, the average high temperatures range from 63°F (17.2°C) in June to 73.4°F (23°C) in July, making the overall weather perfect for outdoor activities. Furthermore, the average rainfall is lower than in any other period of the year - from 1.42" (36mm) in July to about 2.44" (62mm) in June, ensuring fewer disruptions due to rain. The hotels and attractions generally are less crowded during these months compared to the ski season, allowing a more relaxed and enjoyable visit.
The worst time to visit Jackson
The least favorable period to visit Jackson spans from November to early April. During these months, the cold in Jackson becomes exceptionally intense, with the mercury regularly plunging to average lows between 5.2°F (-14.9°C) to 15.1°F (-9.4°C). Accompanied by a high humidity of 92% in December, the conditions become even more severe. The average snowfall also skyrockets to 25.91" (658mm) in December making movement difficult and potentially dangerous.
Spring weather in Jackson
Spring manifests quite late in Jackson given its subarctic climate. April sees temperatures fluctuating between 20.3°F (-6.5°C) to 37.8°F (3.2°C). The snow retreats but the rainfall increases to an average of 2.95" (75mm). Relative humidity follows suit, diving sharply from the high 80s to mid 70s percentage. Also characteristic of Spring, the hours of sunshine begin to noticeably increase, most prominently in May when there is a sudden jump to an average of 9.5 hours of sunshine.
Summer weather in Jackson
In the Summer months from June to August, Jackson experiences relatively moderate conditions. During this period, the highest highs average from 63°F (17.2°C) to 73.4°F (23°C), with July being the warmest month. Humidity levels drop to the year's lowest, making conditions more comfortable. Sunshine hours peak at 11.6 hours in July, and daylight hours are at their maximum, indicating longer days and shorter nights.
Autumn weather in Jackson
Autumn sees a gradual reduction in temperature from 62.8°F (17.1°C) in September to 32°F (0°C) in November. Rainfall climbs steadily to reach 2.36" (60mm) in November. Conversely, the relative humidity and hours of sunlight begin to increase. This period also witnesses the first signs of the upcoming winter, with snowfall making its reappearance in November.
Winter weather in Jackson
The winter months from December to February in Jackson are unarguably harsh, establishing its reputation as a place with severe winters. Temperature highs dip down to 23.5°F (-4.7°C) in January from 32°F (0°C) in December. Lows drop even further with temperatures touching 4.8°F (-15.1°C) in January. Snowfall and snowfall days are at a yearly high, emphasizing the severe winter conditions further. Daylight hours shorten, and the sunshine hours decrease, adding to the winter's intensity.
Weather in January
January in Jackson, Wyoming, exhibits the chilling grip of winter. The brisk winds from the west bring temperatures plummeting below the freezing point. With peaks hardly reaching 23.5°F (-4.7°C), even the afternoons can feel quite cold. Weather in January »
Weather in February
February in Jackson follows the frigid trail of its predecessor. The mercury ranges between 7.2°F (-13.8°C) and 24.3°F (-4.3°C), with cooler days being more frequent. Snowfall continues to grace the city, though the volume slightly surpasses that of January, registering a higher figure of 29.33" (745mm). Weather in February »
Weather in March
March witnesses a slight easing of the winter chill. Comparatively warmer temperatures, climbing up to 30.6°F (-0.8°C) coupled with fewer snowy days, induce the first signs of spring. Also, the snowfall volume starts to dwindle, yet remains significant at 26.38" (670mm) for the month. Weather in March »
Weather in April
The arrival of April announces the true start of spring in Jackson. Temperatures start to range from 20.3°F (-6.5°C) to 37.8°F (3.2°C), casting a pleasant chill in the air. Nevertheless, April can't shake off the shadow of winter completely, with occasional snowfall bringing 21.22" (539mm) of fresh powder to the city. Weather in April »
Weather in May
As May unfolds, Mother Nature switch flips, and Jackson gears up for summer. The city basks in more comfortable temperatures, and the snow covering the landscapes begins to retreat. However, remnants of the old snowfall, totalling 11.42" (290mm), carry the legacy of the past winter. Weather in May »
Weather in June
June marks the tipping point in Jackson's ecosystem as summer replaces the vestiges of spring. Escalating temperatures flirt with the barrier of 63°F (17.2°C), edging towards warm summer days. The snowfall is significantly reduced to just 4.76" (121mm), a stark contrast to the pendant beauty of the past winter months. Weather in June »
Weather in July
Amid the dog days of summer, July in Jackson truly emulates the essence of the season. The mercury scales the highest point of the year, reaching 73.4°F (23°C). With snowfall almost absent, the last traces of winter are swept away, making room for a tinge of adventure. Weather in July »
Weather in August
Retaining the balm of July, August continues the warm trend, though the city experiences a slight dip in temperatures, hovering between 43.3°F (6.3°C) and 72.1°F (22.3°C). Activities promoted by warm and pleasant weather continue to entertain locals and visitors alike. Weather in August »
Weather in September
The arrival of September instigates a shift in Jackson's weather once again. The temperature marginally recedes from the sultry summer highs, settling between 37.2°F (2.9°C) and 62.8°F (17.1°C). September's mere dusting of snowfall at 5.12" (130mm), signals the gradual return of the eagerly awaited winter. Weather in September »
Weather in October
With October setting in, autumn exhibits its full flavour in Jackson. The temperatures continue to drop, plunging to more somber values between 26.4°F (-3.1°C) to 45.5°F (7.5°C). While snowfall gains momentum, amassing 12.2" (310mm) over the month, the city begins its transformation into a winter wonderland. Weather in October »
Weather in November
November, shrouded in the chill of fall, nudges Jackson closer towards winter's doorstep. A colder aura prevails as the mercury dips between 15.1°F (-9.4°C) and 32°F (0°C). The gradually amplifying snowfall, boasting a volume of 19.84" (504mm), drapes the city in a white canvas. Weather in November »
Weather in December
December in Jackson witnesses the return of the harsh winter. The mercury continues its descend, dancing around a chilling 5.2°F (-14.9°C) to 21.9°F (-5.6°C). Substantial snowfall of 24.72" (628mm) buries the city under a thick layer of white. Weather in December »
Updated: Aug 29, 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
How much does it rain?
Throughout the year, there are 103 rainfall days, and 29.84" (758mm) of precipitation is accumulated.
When does it snow in Jackson?
Months with snowfall are January through December.
How many days does it snow?
In Jackson, during the entire year, snow falls for 173.6 days and aggregates up to 181.26" (4604mm) of snow.
What are the months with the lowest UV index?
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 1.
What is the most humid month?
February is the most humid month in Jackson, with an average relative humidity of 94%.
What is the rainiest month?
February is the month with the most rainfall. Rain falls for 3.9 days and accumulates 3.54" (90mm) of precipitation.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 23.7 days and typically aggregates up to 29.33" (745mm) of snow.
What is the month with the least sunshine in Jackson?
February has the least sunshine of the year, with an average of 3.4h of sunshine.
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.
When are the longest days?
June has the longest days of the year, with an average of 15h and 24min of daylight.
What part of the year is the hottest?
July, with average temperatures reaching a high of 73.4°F (23°C) and a low of 43.5°F (6.4°C), is the warmest month.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11.6h of sunshine.
What is the month with the highest UV index?
With an average maximum UV index of 5, July is the month with the highest UV index.
What is the least humid month?
With an average relative humidity of 50%, August is the least humid month.
What is the driest month?
The month with the least rainfall is August, when the rain falls for 11.8 days and typically collects 1.34" (34mm) of precipitation.
When it does not snow?
August is the month with the least snowfall. Snow falls for 0.5 days and accumulates 0.12" (3mm) of snow.
What is the coldest time of year?
December brings the lowest temperatures, with an average high of 21.9°F (-5.6°C) and an average low of 5.2°F (-14.9°C).
What is the month with the shortest days?
With an average of 9h and 0min of daylight, December has the shortest days of the year.
Average temperature
Jackson, WY
The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is December (21.9°F).
The month with the highest average low temperature is July (43.5°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).
Average pressure
Jackson, WY
- Average pressure in January:
30.27"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.99"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.25"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Jackson, WY
- Average wind speed in January:
4.4mph - Average wind speed in February:
5mph - Average wind speed in March:
4.9mph - Average wind speed in April:
4.9mph - Average wind speed in May:
4.9mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5mph - Average wind speed in October:
4.7mph - Average wind speed in November:
4.6mph - Average wind speed in December:
4.3mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).
Average humidity
Jackson, WY
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall
Jackson, WY
- Average rainfall in January:
3.11" - Average rainfall in February:
3.54" - Average rainfall in March:
3.19" - Average rainfall in April:
2.95" - Average rainfall in May:
2.87" - Average rainfall in June:
2.44"
- Average rainfall in July:
1.42" - Average rainfall in August:
1.34" - Average rainfall in September:
1.77" - Average rainfall in October:
1.93" - Average rainfall in November:
2.36" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the least rainfall) is August (1.34").
Average rainfall days
Jackson, WY
- Average rainfall days in January:
2.9 days - Average rainfall days in February:
3.9 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
9.1 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
7.3 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
4.2 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (2.9 days).
Average snowfall
Jackson, WY
- Average snowfall in January:
25.91" - Average snowfall in February:
29.33" - Average snowfall in March:
26.38" - Average snowfall in April:
21.22" - Average snowfall in May:
11.42" - Average snowfall in June:
4.76"
- Average snowfall in July:
0.24" - Average snowfall in August:
0.12" - Average snowfall in September:
5.12" - Average snowfall in October:
12.2" - Average snowfall in November:
19.84" - Average snowfall in December:
24.72"
The month with the highest snowfall is February (29.33").
The month with the least snowfall is August (0.12").
Average snowfall days
Jackson, WY
- Average snowfall days in January:
22.1 days - Average snowfall days in February:
23.7 days - Average snowfall days in March:
24.8 days - Average snowfall days in April:
23.5 days - Average snowfall days in May:
15.7 days - Average snowfall days in June:
4.8 days
- Average snowfall days in July:
0.4 days - Average snowfall days in August:
0.5 days - Average snowfall days in September:
3.3 days - Average snowfall days in October:
13.3 days - Average snowfall days in November:
17.8 days - Average snowfall days in December:
23.7 days
The month with the highest number of snowfall days is March (24.8 days).
The month with the least snowfall days is July (0.4 days).
Average daylight / Average sunshine
Jackson, WY
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 2min - Average sunshine in March:
4h and 4min - Average sunshine in April:
7h and 1min - Average sunshine in May:
9h and 3min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 2min - Average sunshine in September:
10h and 0min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days
Jackson, WY
- Average sunshine days in January:
9.6 days - Average sunshine days in February:
4.8 days - Average sunshine days in March:
5.3 days - Average sunshine days in April:
3.8 days - Average sunshine days in May:
5.9 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
15.6 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
14.7 days - Average sunshine days in November:
11.8 days - Average sunshine days in December:
8 days
The month with the most sunshine days is July (15.6 days).
The month with the least sunshine days is April (3.8 days).
Average UV index
Jackson, WY
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover
Jackson, WY
The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility
Jackson, WY
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
Jackson, Wyoming, USA
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