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Monthly climate in Evanston, Wyoming, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Evanston features a humid continental climate (Dfb).Temperatures typically range between -6 °C (22 °F) and 21 °C (70 °F) through the year, but rarely can drop to -28 °C (-18 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 474 mm (18.7 inches) and receives 98 rainy days on the 1 mm (0.04 inches) threshold annually.Evanston enjoys an average of 3366 hours of sunshine throughout the year, and daylight varies from 9 hours 14 minutes to 15 hours 5 minutes per day.

Monthly average temperatures in Evanston, Wyoming, United States §

The warmest months in Evanston are June, July and August, with daily mean temperatures ranging from 16 to 21 °C (61 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -5 °C (22 - 24 °F) throughout the day. On average each year, Evanston experiences 62 days above 25 °C (77.0 °F) and 178 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Evanston, Wyoming, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 7°C
(46°F)		 11°C
(52°F)		 16°C
(61°F)		 21°C
(71°F)		 27°C
(81°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(90°F)		 24°C
(75°F)		 19°C
(66°F)		 12°C
(54°F)
Mean maximum 6°C
(42°F)		 7°C
(45°F)		 12°C
(54°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(81°F)		 32°C
(90°F)		 32°C
(90°F)		 30°C
(87°F)		 21°C
(70°F)		 14°C
(58°F)		 7°C
(45°F)
Average high -1°C
(30°F)		 -0°C
(32°F)		 5°C
(41°F)		 9°C
(48°F)		 15°C
(60°F)		 23°C
(74°F)		 28°C
(83°F)		 27°C
(81°F)		 22°C
(72°F)		 12°C
(54°F)		 6°C
(43°F)		 -0°C
(31°F)
Daily mean -6°C
(22°F)		 -5°C
(24°F)		 -0°C
(32°F)		 3°C
(38°F)		 9°C
(48°F)		 16°C
(61°F)		 21°C
(70°F)		 19°C
(67°F)		 14°C
(58°F)		 5°C
(41°F)		 0°C
(33°F)		 -5°C
(23°F)
Average low -10°C
(14°F)		 -9°C
(16°F)		 -5°C
(23°F)		 -2°C
(28°F)		 2°C
(36°F)		 8°C
(47°F)		 13°C
(55°F)		 12°C
(53°F)		 7°C
(45°F)		 -1°C
(30°F)		 -5°C
(24°F)		 -10°C
(14°F)
Mean minimum -21°C
(-6°F)		 -20°C
(-3°F)		 -15°C
(5°F)		 -12°C
(10°F)		 -6°C
(21°F)		 -1°C
(31°F)		 7°C
(44°F)		 7°C
(44°F)		 -3°C
(27°F)		 -14°C
(6°F)		 -16°C
(4°F)		 -19°C
(-2°F)
Minimum -28°C
(-18°F)		 -23°C
(-10°F)		 -20°C
(-4°F)		 -15°C
(4°F)		 -9°C
(16°F)		 -3°C
(27°F)		 4°C
(39°F)		 4°C
(40°F)		 -7°C
(20°F)		 -25°C
(-14°F)		 -19°C
(-2°F)		 -22°C
(-8°F)

Compare climate in Evanston with other places

Compare temperature, precipitation, sunshine, UV index in Evanston, Wyoming, United States with other places around the world.

Monthly average precipitation in Evanston, Wyoming, United States §

Evanston usually has the most precipitation in February, March and May, with an average of 11 rainy days and 56 mm (2.2 inches) of precipitation per month.The driest months in Evanston are June, July and August. On average, 22 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Evanston, Wyoming, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 43 (1.7) 52 (2.1) 55 (2.2) 50 (2.0) 61 (2.4) 21 (0.8) 23 (0.9) 21 (0.8) 27 (1.0) 35 (1.4) 43 (1.7) 42 (1.7)
Average precipitation days (≥ 1 mm) 8 11 11 10 13 4 5 5 6 8 7 10

Monthly sunshine hours in Evanston, Wyoming, United States §

The sunniest months in Evanston are June, July and August, when the sun shines an average of 12 hours 21 minutes a day.Least sunny months in Evanston: January, February and December receive an average of 5 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Evanston, Wyoming, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 149 196 260 294 354 384 392 360 308 264 208 191
Mean daily daylight hours 9h 34m 10h 37m 11h 58m 13h 21m 14h 30m 15h 5m 14h 46m 13h 44m 12h 24m 11h 2m 9h 50m 9h 14m

Solar UV radiation in Evanston, Wyoming, United States §

Evanston experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Evanston UV Index data.

Average daily maximum UV levels by month for Evanston, Wyoming, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 4 6 9 10 11 12 12 11 10 7 5 3