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Contents
- 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
Weather in January
January, the same as December, in Sinclair, Wyoming, is a freezing cold winter month, with an average temperature ranging between min 13.3°F (-10.4°C) and max 27°F (-2.8°C). The shift from December to January is characterized by an average high-temperature of a still freezing cold 27°F (-2.8°C), not significantly different from the 26.4°F (-3.1°C) of December. Weather in January »
Weather in February
February, the last month of the winter in Sinclair, is another freezing cold month, with an average temperature varying between 15.3°F (-9.3°C) and 28.6°F (-1.9°C). The start of February sees the average high-temperature at a still subzero cold 28.6°F (-1.9°C), showing little difference from January's 27°F (-2.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Sinclair, Wyoming, with an average temperature ranging between min 24.6°F (-4.1°C) and max 39°F (3.9°C). As February transitions into March, a change in temperatures is observed, with average highs moving from a subzero cold 28.6°F (-1.9°C) to an icy 39°F (3.9°C). Weather in March »
Weather in April
April is a chilly spring month in Sinclair, Wyoming, with temperature in the range of an average high of 47.8°F (8.8°C) and an average low of 30.6°F (-0.8°C). Sinclair's weather in April presents a minor rise in the average high-temperature, moving from a cold 39°F (3.9°C) in March to a frosty 47.8°F (8.8°C). Weather in April »
Weather in May
May, the last month of the spring in Sinclair, is a mild month, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 39.9°F (4.4°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a frosty 47.8°F (8.8°C) to a refreshing 59.7°F (15.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Sinclair, Wyoming, with temperature in the range of an average low of 51.1°F (10.6°C) and an average high of 73.9°F (23.3°C). Sinclair's weather in June shows a rise in the average high-temperature, moving up from May's mild 59.7°F (15.4°C) to a moderately hot 73.9°F (23.3°C). Weather in June »
Weather in July
July, like June, in Sinclair, Wyoming, is another warm summer month, with an average temperature fluctuating between 57.9°F (14.4°C) and 81°F (27.2°C). In Sinclair, July is identified by the highest average temperatures, reaching a peak of 81°F (27.2°C) and a low of 57.9°F (14.4°C). Weather in July »
Weather in August
August, the last month of the summer in Sinclair, is another warm month, with an average temperature ranging between min 56.8°F (13.8°C) and max 79°F (26.1°C). The shift into August uncovers an average high-temperature of a still warm 79°F (26.1°C), subtly different from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Sinclair, Wyoming, with an average temperature ranging between max 70.2°F (21.2°C) and min 49.6°F (9.8°C). In Sinclair, the average high-temperature in September slightly decreases from a moderately hot 79°F (26.1°C) in August to an agreeable 70.2°F (21.2°C). Weather in September »
Weather in October
October, like September, in Sinclair, Wyoming, is a cool autumn month, with an average temperature ranging between min 35.1°F (1.7°C) and max 52°F (11.1°C). Sinclair experiences a clear temperature downturn in October, with average high-temperatures moving from an agreeable 70.2°F (21.2°C) in September to a cool 52°F (11.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cold month in Sinclair, Wyoming, with temperature in the range of an average low of 24.1°F (-4.4°C) and an average high of 38.3°F (3.5°C). November's onset corresponds with a shift in the average high-temperature, moving from a cool 52°F (11.1°C) in October to a wintry 38.3°F (3.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Sinclair, Wyoming, with temperature in the range of an average low of 13.5°F (-10.3°C) and an average high of 26.4°F (-3.1°C). Sinclair's temperature records reveal December as the coldest month, marked by average highs of 26.4°F (-3.1°C) and lows of 13.5°F (-10.3°C). Weather in December »
Updated: Aug 3, 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 are the most humid months?
The months with the highest humidity are January and February, with an average relative humidity of 83%.
How much does it rain?
In Sinclair, during the entire year, the rain falls for 81.7 days and collects up to 9.72" (247mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow?
In Sinclair, during the entire year, snow falls for 80.6 days and aggregates up to 33.39" (848mm) of snow.
What are the months 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 Sinclair.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 5.8h of sunshine.
When is Daylight Saving Time (DST) in Sinclair?
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 April, when the rain falls for 9.7 days and typically aggregates up to 1.42" (36mm) of precipitation.
When does it snow the most?
The month with the most snowfall is April, when snow falls for 8.9 days and typically aggregates up to 5.75" (146mm) of snow.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What month is the hottest?
Temperature records mark July as the warmest month, with highs averaging 81°F (27.2°C) and lows at 57.9°F (14.4°C).
What is the least humid month?
July and August, with an average relative humidity of 35%, are the least humid months in Sinclair.
What month has the most sunshine?
With an average of 12h of sunshine, July has the most sunshine of the year in Sinclair, Wyoming.
What is the month with the highest UV index in Sinclair?
With an average maximum UV index of 6, July is the month with the highest UV index.
What is the driest month?
The month with the least rainfall is August, when the rain falls for 6.6 days and typically collects 0.35" (9mm) of precipitation.
What is the coldest time of year?
December is the coldest month, with an average high-temperature of 26.4°F (-3.1°C) and an average low-temperature of 13.5°F (-10.3°C).
What is the month with the shortest days in Sinclair?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Sinclair, WY
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is December (26.4°F).
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Sinclair, WY
- Average pressure in January:
30.23"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.2"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Sinclair, WY
- Average wind speed in January:
12.7mph - Average wind speed in February:
12.9mph - Average wind speed in March:
12.1mph - Average wind speed in April:
12.5mph - Average wind speed in May:
10.9mph - Average wind speed in June:
11.2mph
- Average wind speed in July:
9.5mph - Average wind speed in August:
9.5mph - Average wind speed in September:
10.6mph - Average wind speed in October:
12.1mph - Average wind speed in November:
13.2mph - Average wind speed in December:
12.6mph
The windiest month (with the highest average wind speed) is November (13.2mph).
The calmest months (with the lowest average wind speed) are July and August (9.5mph).
Average humidity
Sinclair, WY
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (35%).
Average rainfall
Sinclair, WY
- Average rainfall in January:
0.79" - Average rainfall in February:
0.79" - Average rainfall in March:
1.1" - Average rainfall in April:
1.42" - Average rainfall in May:
1.34" - Average rainfall in June:
0.47"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.35" - Average rainfall in September:
0.47" - Average rainfall in October:
0.98" - Average rainfall in November:
0.83" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is April (1.42").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days
Sinclair, WY
- Average rainfall days in January:
6.2 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
9.7 days - Average rainfall days in May:
11.7 days - Average rainfall days in June:
6 days
- Average rainfall days in July:
6.5 days - Average rainfall days in August:
6.6 days - Average rainfall days in September:
7 days - Average rainfall days in October:
6.8 days - Average rainfall days in November:
3.2 days - Average rainfall days in December:
4.6 days
The month with the highest number of rainy days is May (11.7 days).
The month with the least rainy days is November (3.2 days).
Average snowfall
Sinclair, WY
- Average snowfall in January:
4.49" - Average snowfall in February:
4.69" - Average snowfall in March:
5.63" - Average snowfall in April:
5.75" - Average snowfall in May:
1.61" - Average snowfall in June:
0"
The month with the highest snowfall is April (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sinclair, WY
- Average snowfall days in January:
13.9 days - Average snowfall days in February:
14.6 days - Average snowfall days in March:
11.8 days - Average snowfall days in April:
8.9 days - Average snowfall days in May:
2.8 days - Average snowfall days in June:
0 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:
5.4 days - Average snowfall days in November:
9.4 days - Average snowfall days in December:
13.6 days
The month with the highest number of snowfall days is February (14.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Sinclair, 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 4min - 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 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
5h and 5min - Average sunshine in March:
8h and 3min - Average sunshine in April:
10h and 1min - Average sunshine in May:
11h and 0min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 5min - Average sunshine in September:
11h and 1min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 5min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days
Sinclair, WY
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
11.2 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
15.4 days - Average sunshine days in June:
21.1 days
- Average sunshine days in July:
20.9 days - Average sunshine days in August:
20.9 days - Average sunshine days in September:
19.5 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is June (21.1 days).
The month with the least sunshine days is February (11.2 days).
Average UV index
Sinclair, 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
Sinclair, WY
The month with the most cloud cover is February (Cloud cover 45).
The months with the least cloud cover are August and September (Cloud cover 13).
Average visibility
Sinclair, 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).
Sinclair, Wyoming, USA
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