Climate and monthly weather forecastEvanston, WY
Climate and monthly weather forecast
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 »Updated: Jul 19, 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
January and February, with an average relative humidity of 87%, are most humid months.
In Evanston, during the entire year, the rain falls for 94.2 days and collects up to 11.5" (292mm) of precipitation.
January through June, September through December are months with snowfall.
Throughout the year, there are 99.3 snowfall days, and 56.22" (1428mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 5.8h of sunshine.
The month with the most snowfall is March, when snow falls for 15.9 days and typically aggregates up to 10" (254mm) of snow.
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.
The wettest months in Evanston are April and May, with an average 1.38" (35mm) of rainfall.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 5.
July, recognised by an average high temperature of 79.2°F (26.2°C) and a low of 51.6°F (10.9°C), is Evanston's warmest month.
July and August are months without snowfall.
With an average relative humidity of 39%, August is the least humid month.
August is the month with the least rainfall. Rain falls for 7.3 days and accumulates 0.51" (13mm) of precipitation.
With an average of 12h of sunshine, August has the most sunshine of the year.
The months with the lowest UV index are November and December, with an average maximum UV index of 1.
December, with its high-temperature average of 26.4°F (-3.1°C) and a low-temperature average of 10.9°F (-11.7°C), is the coldest month.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
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).
Average pressure
Evanston, 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
Evanston, 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
Evanston, 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
Evanston, 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
Evanston, 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
Evanston, 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
Evanston, 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
Evanston, WY
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 48min - Average sunshine in February:
6h and 6min - Average sunshine in March:
7h and 30min - Average sunshine in April:
9h and 48min - Average sunshine in May:
11h and 6min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 18min - Average sunshine in October:
7h and 30min - Average sunshine in November:
6h and 48min - 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
Evanston, 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
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).
Average cloud cover
Evanston, 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
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).
