Climate and monthly weather forecastGrass Creek, WY
Climate and monthly weather forecast
Weather in January
January, the same as December, in Grass Creek, Wyoming, is another subzero cold winter month, with temperature in the range of an average low of 14.4°F (-9.8°C) and an average high of 29.8°F (-1.2°C). The onset of January brings an average high-temperature of a still subzero cold 29.8°F (-1.2°C), nearly matching the December temperature. Weather in January »Weather in February
February, the last month of the winter in Grass Creek, is also a subzero cold month, with an average temperature varying between 12.7°F (-10.7°C) and 28.2°F (-2.1°C). February records an average high-temperature of a still freezing cold 28.2°F (-2.1°C), indicating a minor variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Grass Creek, is a cold month, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 22.3°F (-5.4°C). March brings a temperature increase, with average high-temperatures moving from February's freezing cold 28.2°F (-2.1°C) to a cold 37.6°F (3.1°C). Weather in March »Weather in April
April in Grass Creek, Wyoming, is a frosty spring month, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 27°F (-2.8°C). The shift from March to April introduces a subtle increase in the average high-temperature, moving from a cold 37.6°F (3.1°C) to a frosty 44.1°F (6.7°C). Weather in April »Weather in May
The last month of the spring, May, is a fresh month in Grass Creek, Wyoming, with an average temperature ranging between max 54.1°F (12.3°C) and min 36.7°F (2.6°C). The shift from April to May sees an increase in the average high-temperature, transitioning from a chilly 44.1°F (6.7°C) to a fresh 54.1°F (12.3°C). Weather in May »Weather in June
The first month of the summer, June, is a refreshing month in Grass Creek, Wyoming, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 67.5°F (19.7°C). The rise of average high-temperatures is seen in June, with an increase from a cool 54.1°F (12.3°C) in May to a comfortable 67.5°F (19.7°C). Weather in June »Weather in July
July is a warm summer month in Grass Creek, Wyoming, with an average temperature ranging between min 53.8°F (12.1°C) and max 76.1°F (24.5°C). Grass Creek, Wyoming, reaches its highest average temperatures in July, measuring 76.1°F (24.5°C) at the peak and 53.8°F (12.1°C) at the lowest. Weather in July »Weather in August
August, the last month of the summer in Grass Creek, is also a moderately hot month, with an average temperature varying between 52.7°F (11.5°C) and 73.9°F (23.3°C). The arrival of August denotes a barely perceptible change in the average high-temperatures to a still warm 73.9°F (23.3°C) from July's 76.1°F (24.5°C). Weather in August »Weather in September
The first month of the autumn, September, is also an enjoyable month in Grass Creek, Wyoming, with an average temperature fluctuating between 45.5°F (7.5°C) and 65.8°F (18.8°C). The start of September involves a subtle temperature drop, shifting from a warm 73.9°F (23.3°C) in August to an enjoyable 65.8°F (18.8°C). Weather in September »Weather in October
October, like September, is a frosty autumn month in Grass Creek, Wyoming, with an average temperature varying between 32.7°F (0.4°C) and 48.9°F (9.4°C). The changeover to October signals a significant decrease in the average high-temperature, dropping from a refreshing 65.8°F (18.8°C) in September to a frosty 48.9°F (9.4°C). Weather in October »Weather in November
The last month of the autumn, November, is also an icy month in Grass Creek, Wyoming, with an average temperature fluctuating between 36.9°F (2.7°C) and 21.4°F (-5.9°C). November's onset brings a slight change in high-temperatures, falling from a chilly 48.9°F (9.4°C) in October to a cold 36.9°F (2.7°C). Weather in November »Weather in December
December, the first month of the winter in Grass Creek, is still a freezing cold month, with an average temperature ranging between max 27.3°F (-2.6°C) and min 11.8°F (-11.2°C). The coldest period is December, when temperatures fluctuate between an average high of 27.3°F (-2.6°C) and a low of 11.8°F (-11.2°C). Weather in December »Updated: Aug 31, 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
The month with the least rainfall is January, when the rain falls for 1.6 days and typically collects 0.2" (5mm) of precipitation.
Throughout the year, there are 93.8 rainfall days, and 12.05" (306mm) of precipitation is accumulated.
Months with snowfall are January through June, September through December.
In Grass Creek, during the entire year, snow falls for 55.8 days and aggregates up to 30.31" (770mm) of snow.
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2.
The most humid month is February, with an average relative humidity of 77%.
February has the least sunshine of the year, with an average of 6.4h of sunshine.
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.
The month with the most snowfall is April, when snow falls for 9.4 days and typically aggregates up to 6.3" (160mm) of snow.
May is the month with the most rainfall. Rain falls for 16.9 days and accumulates 2.48" (63mm) of precipitation.
The month with the longest days is June, with an average of 15h and 24min of daylight.
June and July, with an average maximum UV index of 5, are months with the highest UV index.
Grass Creek experiences its highest temperatures in July, with an average peak of 76.1°F (24.5°C) and a low of 53.8°F (12.1°C).
The least humid month is July, with an average relative humidity of 43%.
July and August are months without snowfall.
July has the most sunshine of the year, with an average of 11.7h of sunshine.
Grass Creek's coldest month, December, registers temperatures that range from a high of 27.3°F (-2.6°C) to a low of 11.8°F (-11.2°C).
With an average of 9h and 0min of daylight, December has the shortest days of the year.
Average temperature
Grass Creek, WY
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is December (27.3°F).
The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is December (11.8°F).
Average pressure
Grass Creek, WY
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.9"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:
30.18"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Grass Creek, WY
- Average wind speed in January:
7.9mph - Average wind speed in February:
7.2mph - Average wind speed in March:
7.2mph - Average wind speed in April:
7.1mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.1mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.6mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Grass Creek, WY
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is July (43%).
Average rainfall
Grass Creek, WY
- Average rainfall in January:
0.2" - Average rainfall in February:
0.35" - Average rainfall in March:
0.75" - Average rainfall in April:
1.14" - Average rainfall in May:
2.48" - Average rainfall in June:
1.57"
- Average rainfall in July:
1.65" - Average rainfall in August:
1.46" - Average rainfall in September:
0.94" - Average rainfall in October:
0.83" - Average rainfall in November:
0.43" - Average rainfall in December:
0.24"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.2").
Average rainfall days
Grass Creek, WY
- Average rainfall days in January:
1.6 days - Average rainfall days in February:
2.4 days - Average rainfall days in March:
4.8 days - Average rainfall days in April:
8.1 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
5.5 days - Average rainfall days in November:
1.7 days - Average rainfall days in December:
2.2 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (1.6 days).
Average snowfall
Grass Creek, WY
- Average snowfall in January:
1.57" - Average snowfall in February:
2.95" - Average snowfall in March:
5.16" - Average snowfall in April:
6.3" - Average snowfall in May:
5.35" - Average snowfall in June:
0.16"
The month with the highest snowfall is April (6.3").
The months with the least snowfall are July and August (0").
Average snowfall days
Grass Creek, WY
- Average snowfall days in January:
5.3 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
9 days - Average snowfall days in April:
9.4 days - Average snowfall days in May:
4.7 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:
0.8 days - Average snowfall days in October:
5.2 days - Average snowfall days in November:
5.8 days - Average snowfall days in December:
6.5 days
The month with the highest number of snowfall days is April (9.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Grass Creek, WY
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 6min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - 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:
6h and 36min - Average sunshine in February:
6h and 24min - Average sunshine in March:
8h and 30min - Average sunshine in April:
9h and 54min - Average sunshine in May:
10h and 12min - Average sunshine in June:
11h and 24min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
11h and 18min - Average sunshine in September:
10h and 24min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 48min - Average sunshine in December:
6h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days
Grass Creek, WY
- Average sunshine days in January:
25 days - Average sunshine days in February:
19.3 days - Average sunshine days in March:
18.9 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
10.2 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
13.2 days - Average sunshine days in September:
18.7 days - Average sunshine days in October:
21.7 days - Average sunshine days in November:
23.7 days - Average sunshine days in December:
24.4 days
The month with the most sunshine days is January (25 days).
The month with the least sunshine days is May (10.2 days).
Average UV index
Grass Creek, WY
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover
Grass Creek, WY
The month with the most cloud cover is April (Cloud cover 35).
The months with the least cloud cover are July and September (Cloud cover 17).
Average visibility
Grass Creek, WY
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
