Climate and monthly weather forecast
Evanston, WY

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The climate of Evanston

Evanston, located in Wyoming, USA, experiences a Humid Continental climate, characterized by a warm summer and no dry season. This classification, known as Dfb in the Köppen climate categorization, encompasses regions with significant temperature differences between seasons.

Throughout the year, the weather in Evanston remains moderately humid, with relative humidity ranging from 39% in August to 87% in December and January. The temperatures fluctuate broadly, with highest temperatures observed in July, around 79.2°F (26.2°C), and lowest in January, approximately 10.8°F (-11.8°C).

Rainfall is fairly consistent, with precipitation values varying from 0.51in in August to 1.38in in April and May. There is no particular month with excessive rainfall or drought-like conditions. The town experiences a snowfall for about half of the year, with the most snowfall, 10in, occurring in March, clearly indicating the extended winter season in the city.

Evanston receives about 9.3 hours to 15.1 hours of daylight throughout the year, with longest days in June and shortest in December. The town also enjoys a moderate amount of sunshine ranging between 6 hours in December to 12 hours in August, providing ample opportunities for outdoor activities during summer.

The best time to visit Evanston

The best time to visit Evanston is between June and August, which aligns with the town’s warm summer season. During this period, temperatures range from 56.7°F (13.7°C) to 79.2°F (26.2°C), and humidity levels drop to around 39-46%, making these conditions ideal for various outdoor activities. Furthermore, with sunshine durations of 11.8 to 12 hours and daylight durations peaking at 15.1 hours in June, visitors can make the most of their day.

The worst time to visit Evanston

Evanston's winters are often harsh, making it less attractive to visitors during this period. January is the coldest month, with lowest temperatures dropping to 10.8°F (-11.8°C), and substantial snowfall of around 7.36in can be expected. Not to mention the short daylight period, stretching just to 9.3 hours in December. The low-lying winter sun translates to around six hours of sunshine, thus restricting day-long outings.

Spring weather in Evanston

Spring in Evanston is from March to May, with temperatures being mild, ranging from 35.4°F (1.9°C) to 56.7°F (13.7°C). This season observes considerably high rainfall, from 1.34" (34mm) to 1.38" (35mm), providing a lush green landscape throughout the city. The daylight duration extends from 12 hours in March to 14.5 hours in May, allowing an enlarged window for outdoor experiences.

Summer weather in Evanston

Summers in Evanston span from June to August. This period features warmer temperatures, varying between 68.5°F (20.3°C) and 79.2°F (26.2°C), and reduced humidity levels (39% - 46%). Precipitation minimizes during this time, dropping to a yearly low of 0.51" (13mm) in August, indicating dry weather conditions. Extended daylight hours (13.8 hours to 15.1 hours) coupled with an enriched sunshine duration of 11.8 to 12 hours make summers the most preferred time for visitors.

Autumn weather in Evanston

Autumn witnesses a transition from the warm summers to the cold winters in Evanston. This season starts in September and ends in November, recording temperatures from 51.8°F (11°C) to 38.8°F (3.8°C). Precipitation levels increase marginally during Autumn, ranging from 0.71" (18mm) to 0.83" (21mm). With daylight hours curtailing gradually from 12.5 hours to 9.9 hours, the sunshine duration drops to about 6.8 to 10.3 hours.

Winter weather in Evanston

Evanston's winter months, December through February, are typically cold and snowy. The temperature lingers between 10.8°F (-11.8°C) to 28.8°F (-1.8°C), with significant snowfall extending from 7.36in in December to 10in in February. Amid these harsh conditions, daylight hours are limited to just 9.3 hours to 10.7 hours, and the sunshine duration narrows down to six hours. Despite the challenging weather during winter, Evanston's snow-covered landscape offers a unique scenic beauty.

Weather in January

January in Evanston, Wyoming, greets residents and visitors with a high level of snowfall, registering at 7.36" (187mm). The climate remains predominantly cold and wintry, with low temperatures and a generous amount of snow creating a classic winter atmosphere. Weather in January »

Weather in February

Noting a slight increase in temperature from preceding month, February in Evanston continues the city's winter stint. February registers a notable increase in snowfall to 7.72" (196mm), arguably the highlight of the month's weather. Weather in February »

Weather in March

Evanston's March weather marks a significant transition from the deep cold of winter to the gentler conditions of spring. Among these changes, the most significant is the dramatic drop in snowfall from February's 7.72" (196mm) to just 10" (254mm). Weather in March »

Weather in April

In April, Evanston experiences a strong surge in temperatures, marking a definitive departure from the previous month's cooler weather. April stands out starkly from March owing to its decrease in snowfall down to 8.03" (204mm), reflecting the accelerating progression of spring. Weather in April »

Weather in May

May in Evanston offers more stable and warmer weather conditions than April, providing residents with an excellent opportunity to enjoy outdoor activities. Gone are the heavy snows of winter, with May registering a meagre 3.11" (79mm) of snowfall, a marked decline from April's total. Weather in May »

Weather in June

June welcomes summer in Evanston and showcases a prominent rise in mercury levels. A notable shift from May's conditions is the minimum snowfall, down to 0.91" (23mm) mirrored by more pleasant, warmer weather. Evansville blossoms as summer truly comes alive during these weeks. Weather in June »

Weather in July

July emerges as the hottest month in Evanston, with the mercury scaling to its annual high at 79.2°F (26.2°C). This reflects a clear escalation in temperature from June, proving Evanston's summer to be in full swing. The city experiences its driest period, promoting increased outdoor and recreational activities. Weather in July »

Weather in August

In August, Evanston's summer continues in full force, though temperatures slide slightly from the peak experienced in July. Witness the lowest recorded rainfall for the year at 0.51" (13mm), signifying the continuation of the warm, dry summer. Weather in August »

Weather in September

September in Evanston marks the arrival of fall, with a noticeable drop in temperature compared to August's highs. The weather changes remarkably, with snowfall figures rising back to 0.91" (23mm) from August's nearly non-existent totals. Weather in September »

Weather in October

October in Evanston sees further cooling as the city marches deeper into fall. With 3.54" (90mm) of snowfall, October marks a clear departure from the mild conditions of September, underpinning the transition into the colder seasons. Weather in October »

Weather in November

November ushers in winter in Evanston with a significant drop in temperature coupled with an increase in snowfall to 5.91" (150mm) from October's tally. Expect to find the first real signs of winter, whether that be a snowy blanket covering Evanston neighbourhoods or the sight of breath misting in the increasingly crisp air. Weather in November »

Weather in December

December in Evanston offers a quintessential winter setting, with temperatures plunging further from November's already chilly readings. The city records the highest snowfall figure of the year — 8.74" (222mm), setting the stage for a potential white Christmas. Weather in December »
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Frequently asked questions

What are the most humid months in Evanston?

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

How many days does it rain in Evanston?

In Evanston, Wyoming, during the entire year, the rain falls for 94.2 days and collects up to 11.5" (292mm) of precipitation.

When does it snow in Evanston?

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

How many days does it snow in Evanston?

In Evanston, 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 in Evanston?

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

When does it snow the most 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 10. 2024, 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 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

What is the rainiest 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 6min of daylight.

When is 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 part of the year is the hottest in Evanston?

July stands out as Evanston's warmest month, with temperatures ranging between an average high of 79.2°F (26.2°C) and a low of 51.6°F (10.9°C).

When it does not snow in Evanston?

In Evanston, snow does not fall in July and August.

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?

The month with the least rainfall in Evanston is August, when the rain falls for 7.3 days and typically collects 0.51" (13mm) of precipitation.

What month has the most sunshine in Evanston?

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

When is the lowest UV index in Evanston?

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

What is the coldest time of year in Evanston?

Evanston's December weather, marked by an average high temperature of 26.4°F (-3.1°C) and an average low temperature of 10.9°F (-11.7°C), is the coldest in the year.

What is the month with the shortest days in Evanston?

The month with the shortest days is December, with an average of 9h and 18min 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 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

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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Evanston, Wyoming, USA

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