Climate and monthly weather forecastAlta, WY
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Alta, Wyoming, with an average temperature fluctuating between 7.9°F (-13.4°C) and 25.2°F (-3.8°C). During January, Alta records an average high-temperature of a still freezing cold 25.2°F (-3.8°C), marking a slight divergence from December's 23.2°F (-4.9°C). Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Alta, Wyoming, with an average temperature varying between 9.9°F (-12.3°C) and 25.5°F (-3.6°C). The advent of February denotes an average high-temperature of a still subzero cold 25.5°F (-3.6°C), subtly different from January's 25.2°F (-3.8°C). Weather in February »Weather in March
The first month of the spring, March, is a wintry month in Alta, Wyoming, with temperature in the range of an average low of 16.7°F (-8.5°C) and an average high of 32.5°F (0.3°C). March's arrival is noted with a slight increase in the average high-temperature, moving from a freezing cold 25.5°F (-3.6°C) in February to an icy 32.5°F (0.3°C). Weather in March »Weather in April
April, the same as March, is a wintry spring month in Alta, Wyoming, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 22.8°F (-5.1°C). As March transitions into April, Alta notices a gentle rise in the average high-temperature, transitioning from a cold 32.5°F (0.3°C) to a still icy 40.1°F (4.5°C). Weather in April »Weather in May
May, the last month of the spring in Alta, is a fresh month, with an average temperature ranging between max 53.6°F (12°C) and min 32°F (0°C). With the beginning of May, Alta's average high-temperature sees an increase, transitioning from an icy 40.1°F (4.5°C) in April to a fresh 53.6°F (12°C). Weather in May »Weather in June
June, the first month of the summer in Alta, is a refreshing month, with temperature in the range of an average high of 64.8°F (18.2°C) and an average low of 39°F (3.9°C). June witnesses an increase in the average high-temperature, moving from a cool 53.6°F (12°C) in May to a comfortable 64.8°F (18.2°C). Weather in June »Weather in July
July is a moderately hot summer month in Alta, Wyoming, with an average temperature fluctuating between 75.4°F (24.1°C) and 46.9°F (8.3°C). Alta's warmest weather arrives in July, when temperatures average a high of 75.4°F (24.1°C) and a low of 46.9°F (8.3°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Alta, Wyoming, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 74.1°F (23.4°C). With August's arrival, Alta's weather records an average high-temperature of a still warm 74.1°F (23.4°C), marking little difference from July's 75.4°F (24.1°C). Weather in August »Weather in September
September, the first month of the autumn in Alta, is also an enjoyable month, with an average temperature varying between 64.9°F (18.3°C) and 40.1°F (4.5°C). Alta experiences a temperature shift at the start of September, with average high-temperatures adjusting from a moderately hot 74.1°F (23.4°C) in August to an enjoyable 64.9°F (18.3°C). Weather in September »Weather in October
October, the same as September, in Alta, Wyoming, is a frosty autumn month, with an average temperature fluctuating between 46.9°F (8.3°C) and 29.1°F (-1.6°C). With the beginning of October, Alta's average high-temperature experiences a significant decrease, moving from an enjoyable 64.9°F (18.3°C) in September to a frosty 46.9°F (8.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Alta, Wyoming, with an average temperature fluctuating between 33.1°F (0.6°C) and 17.2°F (-8.2°C). As November begins, there is a decrease in the average high-temperature, falling from a chilly 46.9°F (8.3°C) in October to a wintry 33.1°F (0.6°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Alta, Wyoming, with an average temperature fluctuating between 7.7°F (-13.5°C) and 23.2°F (-4.9°C). December, recording an average high temperature of 23.2°F (-4.9°C) and a low temperature of 7.7°F (-13.5°C), is Alta's coldest month. Weather in December »Updated: Jul 24, 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
Throughout the year, there are 96.6 rainfall days, and 32.95" (837mm) of precipitation is accumulated.
Months with snowfall are January through June, August through December.
Throughout the year, there are 160.8 snowfall days, and 200.16" (5084mm) of snow is accumulated.
January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index.
The most humid month in Alta is February, with an average relative humidity of 94%.
The month with the most rainfall is February, when the rain falls for 3.2 days and typically aggregates up to 4.13" (105mm) of precipitation.
February is the month with the most snowfall. Snow falls for 22.6 days and accumulates 34.33" (872mm) of snow.
With an average of 3.3h of sunshine, February has the least sunshine of the year.
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.
June has the longest days of the year, with an average of 15h and 24min of daylight.
The month of July, characterized by an average high of 75.4°F (24.1°C) and a low of 46.9°F (8.3°C), is recognized as the warmest.
The month with the least rainfall is July, when the rain falls for 8.2 days and typically collects 0.91" (23mm) of precipitation.
July is the only month when snow does not fall.
The month with the most sunshine is July, with an average of 11.7h of sunshine.
The month with the highest UV index is July, with an average maximum UV index of 5.
August is the least humid month, with an average relative humidity of 47%.
Alta witnesses the coldest weather in December, with temperatures averaging a high of 23.2°F (-4.9°C) and a low of 7.7°F (-13.5°C).
December has the shortest days of the year, with an average of 9h and 0min of daylight.
Average temperature
Alta, WY
The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (23.2°F).
The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).
Average pressure
Alta, 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:
30.24"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
Alta, WY
- Average wind speed in January:
4.8mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.4mph - Average wind speed in April:
5.5mph - Average wind speed in May:
5.5mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
5.9mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.2mph - Average wind speed in November:
5mph - Average wind speed in December:
4.8mph
The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and December (4.8mph).
Average humidity
Alta, WY
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall
Alta, WY
- Average rainfall in January:
3.66" - Average rainfall in February:
4.13" - Average rainfall in March:
3.5" - Average rainfall in April:
3.78" - Average rainfall in May:
3.46" - Average rainfall in June:
2.76"
- Average rainfall in July:
0.91" - Average rainfall in August:
0.98" - Average rainfall in September:
1.65" - Average rainfall in October:
2.36" - Average rainfall in November:
2.6" - Average rainfall in December:
3.15"
The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days
Alta, WY
- Average rainfall days in January:
3 days - Average rainfall days in February:
3.2 days - Average rainfall days in March:
6 days - Average rainfall days in April:
9 days - Average rainfall days in May:
15.5 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
8.2 days - Average rainfall days in August:
9.6 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
4.4 days - Average rainfall days in December:
4.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (3 days).
Average snowfall
Alta, WY
- Average snowfall in January:
30.2" - Average snowfall in February:
34.33" - Average snowfall in March:
28.39" - Average snowfall in April:
25.43" - Average snowfall in May:
12.95" - Average snowfall in June:
3.86"
- Average snowfall in July:
0" - Average snowfall in August:
0.04" - Average snowfall in September:
4.49" - Average snowfall in October:
12.8" - Average snowfall in November:
21.81" - Average snowfall in December:
25.87"
The month with the highest snowfall is February (34.33").
The month with the least snowfall is July (0").
Average snowfall days
Alta, WY
- Average snowfall days in January:
21.8 days - Average snowfall days in February:
22.6 days - Average snowfall days in March:
23.6 days - Average snowfall days in April:
20.7 days - Average snowfall days in May:
12.1 days - Average snowfall days in June:
3.7 days
- Average snowfall days in July:
0.1 days - Average snowfall days in August:
0.3 days - Average snowfall days in September:
2.5 days - Average snowfall days in October:
12.1 days - Average snowfall days in November:
18.5 days - Average snowfall days in December:
22.8 days
The month with the highest number of snowfall days is March (23.6 days).
The month with the least snowfall days is July (0.1 days).
Average daylight / Average sunshine
Alta, 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:
3h and 30min - Average sunshine in February:
3h and 18min - Average sunshine in March:
4h and 36min - Average sunshine in April:
7h and 36min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
11h and 36min - Average sunshine in September:
9h and 54min - Average sunshine in October:
6h and 12min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days
Alta, WY
- Average sunshine days in January:
9.8 days - Average sunshine days in February:
6.3 days - Average sunshine days in March:
6.9 days - Average sunshine days in April:
6.2 days - Average sunshine days in May:
7.5 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
20.3 days - Average sunshine days in August:
18.1 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
14.8 days - Average sunshine days in November:
11.7 days - Average sunshine days in December:
8.4 days
The month with the most sunshine days is July (20.3 days).
The month with the least sunshine days is April (6.2 days).
Average UV index
Alta, WY
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover
Alta, WY
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility
Alta, WY
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
