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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, like December, is another subzero cold winter month in Altamont, Wyoming, with an average temperature fluctuating between 10.8°F (-11.8°C) and 27.7°F (-2.4°C). In January, Altamont experiences a minor shift in meteorological conditions with average high-temperatures marked at a still freezing cold 27.7°F (-2.4°C), closely mirroring the climate in December. Weather in January »
Weather in February
February, the last month of the winter in Altamont, is also a subzero cold month, with an average temperature varying between 28.8°F (-1.8°C) and 13.3°F (-10.4°C). The advent of February presents an average high-temperature of a still subzero cold 28.8°F (-1.8°C), maintaining a close correlation with the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is an icy month in Altamont, Wyoming, with an average temperature ranging between min 20.7°F (-6.3°C) and max 35.4°F (1.9°C). With the onset of March, Altamont's average high-temperature experiences a slight rise, moving from February's subzero cold 28.8°F (-1.8°C) to a wintry 35.4°F (1.9°C). Weather in March »
Weather in April
April is a frosty spring month in Altamont, Wyoming, with an average temperature ranging between min 27.3°F (-2.6°C) and max 44.6°F (7°C). April brings a temperature increase, with average high-temperatures moving from March's icy 35.4°F (1.9°C) to a chilly 44.6°F (7°C). Weather in April »
Weather in May
May, the last month of the spring in Altamont, is a refreshing month, with an average temperature ranging between max 56.7°F (13.7°C) and min 35.4°F (1.9°C). As Altamont transitions into May, a rise in the average high-temperature is observed, moving from a chilly 44.6°F (7°C) in April to a mild 56.7°F (13.7°C). Weather in May »
Weather in June
June, the first month of the summer in Altamont, is a pleasant month, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 70.2°F (21.2°C). Entering June, Altamont sees a temperature rise, with the average high-temperature advancing from May's refreshing 56.7°F (13.7°C) to a pleasant 70.2°F (21.2°C). Weather in June »
Weather in July
July is a moderately hot summer month in Altamont, Wyoming, with an average temperature varying between 79.2°F (26.2°C) and 51.6°F (10.9°C). In Altamont, the peak average temperatures are observed in July, with a high of 79.2°F (26.2°C) and a low of 51.6°F (10.9°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Altamont, Wyoming, with an average temperature fluctuating between 51.4°F (10.8°C) and 77.5°F (25.3°C). The onset of August notes an average high-temperature of a still warm 77.5°F (25.3°C), subtly shifted from July's 79.2°F (26.2°C). Weather in August »
Weather in September
September, the first month of the autumn in Altamont, is also an agreeable month, with an average temperature ranging between max 68.5°F (20.3°C) and min 45°F (7.2°C). The commencement of September indicates a shift in the average high-temperature, receding from August's moderately hot 77.5°F (25.3°C) to an agreeable 68.5°F (20.3°C). Weather in September »
Weather in October
October, the same as September, is a cool autumn month in Altamont, Wyoming, with an average temperature fluctuating between 51.8°F (11°C) and 32.9°F (0.5°C). A decrease in the average high-temperature marks October, falling from September's pleasant 68.5°F (20.3°C) to a fresh 51.8°F (11°C). Weather in October »
Weather in November
November, the last month of the autumn in Altamont, is another cold month, with an average temperature fluctuating between 38.8°F (3.8°C) and 22.1°F (-5.5°C). As October transitions into November, Altamont sees a drop in the average high-temperature, transitioning from a cool 51.8°F (11°C) to a wintry 38.8°F (3.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Altamont, Wyoming, with an average temperature varying between 10.9°F (-11.7°C) and 26.4°F (-3.1°C). December proves to be the coldest month, recording an average maximum temperature of 26.4°F (-3.1°C) and a minimum temperature of 10.9°F (-11.7°C). Weather in December »
Updated: Jun 14, 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 87%.
How much does it rain?
In Altamont, during the entire year, the rain falls for 94.2 days and collects up to 11.5" (292mm) of precipitation.
When does it snow?
January through June, September through December are months with snowfall in Altamont.
How many days does it snow?
In Altamont, during the entire year, snow falls for 99.3 days and aggregates up to 56.22" (1428mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 5.8h of sunshine.
What is the snowiest month?
March is the month with the most snowfall. Snow falls for 15.9 days and accumulates 10" (254mm) 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 in Altamont?
The wettest months in Altamont are April and May, with an average 1.38" (35mm) of rainfall.
When are the longest days?
With an average of 15h and 6min of daylight, June has the longest days of the year.
When is the highest UV index?
June through August, with an average maximum UV index of 5, are months with the highest UV index.
What month is the hottest?
July, on average, is the warmest month in Altamont, registering a high temperature of 79.2°F (26.2°C) and a low of 51.6°F (10.9°C).
When it does not snow?
July and August are months without snowfall.
What is the least humid month?
With an average relative humidity of 39%, August is the least humid month.
What is the driest month?
August is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.51" (13mm) of precipitation.
What month has the most sunshine?
The month with the most sunshine in Altamont is August, with an average of 12h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are November and December, with an average maximum UV index of 1.
What time of the year is the coldest?
With average temperatures fluctuating between a high of 26.4°F (-3.1°C) and a low of 10.9°F (-11.7°C), December stands out as the coldest month in Altamont.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Altamont, WY
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.4°F).
The month with the highest average low temperature is July (51.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure
Altamont, WY
- Average pressure in January:
30.29"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.96"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 (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Altamont, WY
- Average wind speed in January:
7mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.5mph - Average wind speed in April:
8.2mph - Average wind speed in May:
7.5mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
7mph - Average wind speed in September:
7.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
7.8mph - Average wind speed in December:
6.8mph
The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity
Altamont, WY
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).
Average rainfall
Altamont, WY
- Average rainfall in January:
0.94" - Average rainfall in February:
1.1" - Average rainfall in March:
1.34" - Average rainfall in April:
1.38" - Average rainfall in May:
1.38" - Average rainfall in June:
0.75"
- Average rainfall in July:
0.59" - Average rainfall in August:
0.51" - Average rainfall in September:
0.71" - Average rainfall in October:
0.83" - Average rainfall in November:
0.83" - Average rainfall in December:
1.14"
The wettest months (with the highest rainfall) are April and May (1.38").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days
Altamont, WY
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
10.3 days - Average rainfall days in May:
11.9 days - Average rainfall days in June:
7.8 days
- Average rainfall days in July:
7.6 days - Average rainfall days in August:
7.3 days - Average rainfall days in September:
8 days - Average rainfall days in October:
5.8 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
7.1 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is February (5.5 days).
Average snowfall
Altamont, WY
- Average snowfall in January:
7.36" - Average snowfall in February:
7.72" - Average snowfall in March:
10" - Average snowfall in April:
8.03" - Average snowfall in May:
3.11" - Average snowfall in June:
0.91"
The month with the highest snowfall is March (10").
The months with the least snowfall are July and August (0").
Average snowfall days
Altamont, WY
- Average snowfall days in January:
14.3 days - Average snowfall days in February:
16.3 days - Average snowfall days in March:
15.9 days - Average snowfall days in April:
12.7 days - Average snowfall days in May:
5.8 days - Average snowfall days in June:
1 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
1.1 days - Average snowfall days in October:
5.5 days - Average snowfall days in November:
11.2 days - Average snowfall days in December:
15.5 days
The month with the highest number of snowfall days is February (16.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Altamont, 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 2min
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 18min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 3min - Average sunshine in April:
9h and 5min - Average sunshine in May:
11h and 1min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 2min - Average sunshine in October:
7h and 3min - Average sunshine in November:
6h and 5min - Average sunshine in December:
6h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days
Altamont, WY
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
11.4 days - Average sunshine days in March:
12.4 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
19.5 days
- Average sunshine days in July:
17.3 days - Average sunshine days in August:
16.8 days - Average sunshine days in September:
17 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
15.1 days
The month with the most sunshine days is June (19.5 days).
The month with the least sunshine days is April (10.8 days).
Average UV index
Altamont, WY
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover
Altamont, WY
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility
Altamont, WY
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Altamont, Wyoming, USA
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