Climate and monthly weather forecast
Alta, WY

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Weather in January

January, like December, is a freezing cold winter month in Alta, Wyoming, with temperature in the range of an average low of 7.9°F (-13.4°C) and an average high of 25.2°F (-3.8°C). At the onset of January, Alta records an average high-temperature of a still freezing cold 25.2°F (-3.8°C), showing little deviation from the preceding month. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Alta, Wyoming, with an average temperature fluctuating between 25.5°F (-3.6°C) and 9.9°F (-12.3°C). The advent of February reveals an average high-temperature of a still freezing cold 25.5°F (-3.6°C), showing minimal difference from the prior month. Weather in February »

Weather in March

March, the first month of the spring in Alta, is a wintry month, with an average temperature fluctuating between 16.7°F (-8.5°C) and 32.5°F (0.3°C). Alta in March experiences a slight uptick in the average high-temperature, adjusting from February's subzero cold 25.5°F (-3.6°C) to a cold 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). The arrival of April signals a slight increase in the average high-temperature, moving from an icy 32.5°F (0.3°C) in March to a still wintry 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 temperature in the range of an average high of 53.6°F (12°C) and an average low of 32°F (0°C). Alta's weather shows a temperature rise with the arrival of May, moving from a cold 40.1°F (4.5°C) in April to a cool 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 an average temperature ranging between min 39°F (3.9°C) and max 64.8°F (18.2°C). In June, the average high-temperature increases from a fresh 53.6°F (12°C) in May to a refreshing 64.8°F (18.2°C). Weather in June »

Weather in July

July is a warm summer month in Alta, Wyoming, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 46.9°F (8.3°C). July, having an average high-temperature of 75.4°F (24.1°C) and an average low-temperature of 46.9°F (8.3°C), is the warmest month. 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 high of 74.1°F (23.4°C) and an average low of 46.8°F (8.2°C). As Alta, Wyoming, steps into August, the average high-temperature is measured at a still moderately hot 74.1°F (23.4°C), displaying minor differences 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). The shift from August to September involves a decrease in the average high-temperature, dropping from a warm 74.1°F (23.4°C) to a refreshing 64.9°F (18.3°C). Weather in September »

Weather in October

October, like September, is another chilly autumn month in Alta, Wyoming, with an average temperature fluctuating between 46.9°F (8.3°C) and 29.1°F (-1.6°C). The onset of October witnesses a clear shift in the average high-temperature, dropping from a comfortable 64.9°F (18.3°C) in September to a frosty 46.9°F (8.3°C). Weather in October »

Weather in November

November, the last month of the autumn in Alta, is also a wintry month, with an average temperature varying between 17.2°F (-8.2°C) and 33.1°F (0.6°C). With November's onset, the average high-temperature recedes from October's chilly 46.9°F (8.3°C) to a cold 33.1°F (0.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Alta, Wyoming, with an average temperature fluctuating between 23.2°F (-4.9°C) and 7.7°F (-13.5°C). Temperature readings reach their annual highs in December, averaging 23.2°F (-4.9°C) and a minimum average of 7.7°F (-13.5°C). Weather in December »
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Frequently asked questions

How much does it rain in Alta?

Throughout the year, there are 96.6 rainfall days, and 32.95" (837mm) of precipitation is accumulated.

When does it snow in Alta?

January through June, August through December are months with snowfall.

How much does it snow in Alta?

In Alta, Wyoming, during the entire year, snow falls for 160.8 days and aggregates up to 200.16" (5084mm) of snow.

What is the month with the lowest UV index in Alta?

The months with the lowest UV index in Alta, Wyoming, are January through March, October through December, with an average maximum UV index of 1.

What is the most humid month in Alta?

February is the most humid month in Alta, Wyoming, with an average relative humidity of 94%.

What is the rainiest month in Alta?

The month with the most rainfall in Alta, Wyoming, is February, when the rain falls for 3.2 days and typically aggregates up to 4.13" (105mm) of precipitation.

When does it snow the most in Alta?

The month with the most snowfall in Alta is February, when snow falls for 22.6 days and typically aggregates up to 34.33" (872mm) of snow.

What is the month with the least sunshine in Alta?

The month with the least sunshine in Alta is February, with an average of 3.3h of sunshine.

When is Daylight Saving Time (DST) in Alta?

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 in Alta?

June has the longest days of the year in Alta, with an average of 15h and 24min of daylight.

What part of the year is the hottest in Alta?

The warmest temperatures in Alta, Wyoming, occur during July, when averages reach a peak of 75.4°F (24.1°C) and a low of 46.9°F (8.3°C).

What is the driest month in Alta?

The month with the least rainfall is July, when the rain falls for 8.2 days and typically collects 0.91" (23mm) of precipitation.

When it does not snow in Alta?

The only month without snowfall in Alta, Wyoming, is July.

What month has the most sunshine in Alta?

July has the most sunshine of the year in Alta, Wyoming, with an average of 11.7h of sunshine.

When is the highest UV index in Alta?

July is the month with the highest UV index, with an average maximum UV index of 5.

What is the least humid month in Alta?

August is the least humid month in Alta, with an average relative humidity of 47%.

What are the coldest months in Alta?

Alta's temperature records reveal December as the coldest month, marked by average highs of 23.2°F (-4.9°C) and lows of 7.7°F (-13.5°C).

What is the month with the shortest days in Alta?

With an average of 9h and 0min of daylight, December has the shortest days of the year in Alta, Wyoming.

Average pressure
Alta, WY

Average pressure - Alta, WY

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Alta, WY

Average wind speed - Alta, WY

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).

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Average rainfall
Alta, WY

Average rainfall - Alta, WY

The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is July (0.91").

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Average rainfall days
Alta, WY

Average rainfall days - Alta, WY

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).

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Average snowfall
Alta, WY

Average snowfall - Alta, WY

The month with the highest snowfall is February (34.33").
The month with the least snowfall is July (0").

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Average snowfall days
Alta, WY

Average snowfall days - Alta, WY

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).

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Average daylight / Average sunshine
Alta, WY

Average daylight / Average sunshine - Alta, WY

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).

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).

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Average sunshine days
Alta, WY

Average sunshine days - Alta, WY

The month with the most sunshine days is July (20.3 days).
The month with the least sunshine days is April (6.2 days).

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Average UV index
Alta, WY

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).

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Average visibility
Alta, WY

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).

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Alta, Wyoming, USA

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