Climate and monthly weather forecast
Evanston, WY

Weather in January

January, like December, is another subzero cold winter month in Evanston, Wyoming, with an average temperature fluctuating between 27.7°F (-2.4°C) and 10.8°F (-11.8°C). In January, the average high-temperature is almost the same as in December - a still subzero cold 27.7°F (-2.4°C). Weather in January »

Weather in February

February, the last month of the winter in Evanston, is also a subzero cold month, with an average temperature ranging between min 13.3°F (-10.4°C) and max 28.8°F (-1.8°C). In Evanston, the average high-temperature in February is practically the same as in January - a still subzero cold 28.8°F (-1.8°C). Weather in February »

Weather in March

The first month of the spring, March, is a cold month in Evanston, Wyoming, with an average temperature ranging between max 35.4°F (1.9°C) and min 20.7°F (-6.3°C). In March, the average high-temperature slightly increases from a freezing cold 28.8°F (-1.8°C) in February to a wintry 35.4°F (1.9°C). Weather in March »

Weather in April

April is a chilly spring month in Evanston, Wyoming, with an average temperature varying between 27.3°F (-2.6°C) and 44.6°F (7°C). In Evanston, the average high-temperature in April increases from a cold 35.4°F (1.9°C) in March to a chilly 44.6°F (7°C). Weather in April »

Weather in May

May, the last month of the spring in Evanston, is a moderate month, with an average temperature varying between 56.7°F (13.7°C) and 35.4°F (1.9°C). In Evanston, Wyoming, the average high-temperature in May rises from a frosty 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 Evanston, is an agreeable month, with temperature in the range of an average high of 70.2°F (21.2°C) and an average low of 43.5°F (6.4°C). In Evanston, Wyoming, the average high-temperature in June increases from a moderate 56.7°F (13.7°C) in May to an agreeable 70.2°F (21.2°C). Weather in June »

Weather in July

July in Evanston, Wyoming, is a warm summer month, with an average temperature ranging between min 51.6°F (10.9°C) and max 79.2°F (26.2°C). July is the warmest month, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 51.6°F (10.9°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Evanston, Wyoming, with temperature in the range of an average low of 51.4°F (10.8°C) and an average high of 77.5°F (25.3°C). In Evanston, the average high-temperature in August is practically the same as in July - a still moderately hot 77.5°F (25.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Evanston, Wyoming, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 45°F (7.2°C). In Evanston, the average high-temperature in September decreases from a warm 77.5°F (25.3°C) in August to a pleasant 68.5°F (20.3°C). Weather in September »

Weather in October

October, like September, in Evanston, Wyoming, is another fresh autumn month, with an average temperature ranging between max 51.8°F (11°C) and min 32.9°F (0.5°C). In Evanston, Wyoming, the average high-temperature in October plummets from a pleasant 68.5°F (20.3°C) in September to a cool 51.8°F (11°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Evanston, Wyoming, with an average temperature varying between 22.1°F (-5.5°C) and 38.8°F (3.8°C). In Evanston, the average high-temperature in November decreases from a cool 51.8°F (11°C) in October to a cold 38.8°F (3.8°C). Weather in November »

Weather in December

The first month of the winter, December, is also a subzero cold month in Evanston, Wyoming, with temperature in the range of an average low of 10.9°F (-11.7°C) and an average high of 26.4°F (-3.1°C). With an average high-temperature of 26.4°F (-3.1°C) and an average low-temperature of 10.9°F (-11.7°C), December is the coldest month. Weather in December »
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FAQ

What is the most humid month in Evanston?

January and February, with an average relative humidity of 87%, are most humid months.

How much does it rain in Evanston?

Throughout the year, there are 94.2 rainfall days, and 11.5" (292mm) of precipitation is accumulated.

When does it snow in Evanston?

Months with snowfall in Evanston, Wyoming, are January through June, September through December.

How much does it snow in Evanston?

Throughout the year, there are 99.3 snowfall days, and 56.22" (1428mm) of snow is accumulated.

What is the month with the least sunshine in Evanston?

With an average of 5.8h of sunshine, January has the least sunshine of the year in Evanston.

What is the snowiest month in Evanston?

The month with the most snowfall is March, when snow falls for 15.9 days and typically aggregates up to 10" (254mm) of snow.

When is Daylight Saving Time (DST) in Evanston?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Evanston, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from MDT to MST.

What is the wettest month in Evanston?

The wettest months are April and May, with an average 1.38" (35mm) of rainfall.

When are the longest days in Evanston?

The month with the longest days in Evanston is June, with an average of 15h and 7min of daylight.

What is the month with the highest UV index in Evanston?

June through August, with an average maximum UV index of 5, are months with the highest UV index in Evanston.

What is the warmest month in Evanston?

July is the warmest month, with an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 51.6°F (10.9°C).

When it does not snow in Evanston?

July and August are months without snowfall in Evanston, Wyoming.

What is the least humid month in Evanston?

With an average relative humidity of 39%, August is the least humid month.

What is the driest month in Evanston?

August is the month with the least rainfall in Evanston. Rain falls for 7.3 days and accumulates 0.51" (13mm) of precipitation.

What month has the most sunshine in Evanston?

With an average of 12h of sunshine, August has the most sunshine of the year.

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

November and December, with an average maximum UV index of 1, are months with the lowest UV index in Evanston, Wyoming.

What is the coldest month in Evanston?

The coldest month in Evanston, Wyoming, is December, with an average high-temperature of 26.4°F (-3.1°C) and an average low-temperature of 10.9°F (-11.7°C).

What is the month with the shortest days in Evanston?

The month with the shortest days is December, with an average of 9h and 16min of daylight.

Average temperature
Evanston, WY

Average temperature - Evanston, 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).

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Average pressure
Evanston, WY

Average pressure - Evanston, WY

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed
Evanston, WY

Average wind speed - Evanston, WY

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).

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Average humidity
Evanston, WY

Average humidity - Evanston, WY

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).

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Average rainfall
Evanston, WY

Average rainfall - Evanston, WY

The wettest months (with the highest rainfall) are April and May (1.38").
The driest month (with the least rainfall) is August (0.51").

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Average rainfall days
Evanston, WY

Average rainfall days - Evanston, WY

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).

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Average snowfall
Evanston, WY

Average snowfall - Evanston, WY

The month with the highest snowfall is March (10").
The months with the least snowfall are July and August (0").

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Average snowfall days
Evanston, WY

Average snowfall days - Evanston, WY

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).

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Average daylight / Average sunshine
Evanston, WY

Average daylight / Average sunshine - Evanston, WY

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 16min).

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).

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Average sunshine days
Evanston, WY

Average sunshine days - Evanston, WY

The month with the most sunshine days is June (19.5 days).
The month with the least sunshine days is April (10.8 days).

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Average UV index
Evanston, WY

Average UV index - Evanston, 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).

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Average visibility
Evanston, WY

Average visibility - Evanston, 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).

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