nomadseason

Monthly climate in Afton, Wyoming, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Afton features a subarctic climate (Dfc).Temperatures typically range between -7 °C (20 °F) and 18 °C (64 °F) through the year, but rarely can drop to -29 °C (-20 °F) or can rise to as high as 30 °C (87 °F).The average annual precipitation amounts to about 775 mm (30.5 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Afton enjoys an average of 3139 hours of sunshine throughout the year, and daylight varies from 9 hours 4 minutes to 15 hours 15 minutes per day.

Monthly average temperatures in Afton, Wyoming, United States §

The warmest months in Afton are June, July and August, with daily mean temperatures ranging from 13 to 18 °C (55 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -6 °C (20 - 21 °F) throughout the day. On average each year, Afton experiences 29 days above 25 °C (77.0 °F) and 205 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Afton, 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 5°C
(41°F)		 8°C
(47°F)		 13°C
(56°F)		 16°C
(61°F)		 23°C
(74°F)		 28°C
(83°F)		 30°C
(87°F)		 30°C
(87°F)		 29°C
(84°F)		 20°C
(69°F)		 15°C
(59°F)		 7°C
(45°F)
Mean maximum 3°C
(38°F)		 5°C
(41°F)		 11°C
(52°F)		 14°C
(57°F)		 20°C
(68°F)		 23°C
(73°F)		 29°C
(84°F)		 29°C
(84°F)		 27°C
(81°F)		 18°C
(64°F)		 9°C
(49°F)		 4°C
(40°F)
Average high -2°C
(28°F)		 -2°C
(29°F)		 4°C
(39°F)		 6°C
(43°F)		 11°C
(52°F)		 19°C
(67°F)		 25°C
(77°F)		 24°C
(75°F)		 19°C
(66°F)		 9°C
(48°F)		 3°C
(37°F)		 -2°C
(28°F)
Daily mean -7°C
(21°F)		 -6°C
(21°F)		 -1°C
(30°F)		 1°C
(34°F)		 5°C
(41°F)		 13°C
(55°F)		 18°C
(64°F)		 16°C
(62°F)		 11°C
(52°F)		 2°C
(37°F)		 -3°C
(26°F)		 -7°C
(20°F)
Average low -10°C
(14°F)		 -10°C
(15°F)		 -5°C
(23°F)		 -4°C
(26°F)		 -1°C
(31°F)		 5°C
(41°F)		 9°C
(49°F)		 8°C
(47°F)		 3°C
(39°F)		 -3°C
(26°F)		 -9°C
(16°F)		 -11°C
(12°F)
Mean minimum -19°C
(-3°F)		 -19°C
(-1°F)		 -15°C
(6°F)		 -11°C
(12°F)		 -9°C
(16°F)		 -3°C
(28°F)		 3°C
(38°F)		 2°C
(37°F)		 -5°C
(23°F)		 -16°C
(3°F)		 -23°C
(-10°F)		 -20°C
(-4°F)
Minimum -22°C
(-8°F)		 -22°C
(-8°F)		 -19°C
(-2°F)		 -14°C
(6°F)		 -11°C
(13°F)		 -5°C
(23°F)		 1°C
(34°F)		 -0°C
(32°F)		 -11°C
(13°F)		 -29°C
(-20°F)		 -28°C
(-17°F)		 -23°C
(-8°F)

Compare climate in Afton with other places

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

Monthly average precipitation in Afton, Wyoming, United States §

Afton usually has the most precipitation in February, April and May, with an average of 15 rainy days and 95 mm (3.7 inches) of precipitation per month.The driest months in Afton are June, July and August. On average, 32 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Afton, 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) 75 (2.9) 115 (4.5) 66 (2.6) 86 (3.4) 82 (3.2) 43 (1.7) 20 (0.8) 33 (1.3) 51 (2.0) 60 (2.4) 73 (2.9) 72 (2.8)
Average precipitation days (≥ 1 mm) 14 18 15 14 13 8 5 5 7 10 12 15

Monthly sunshine hours in Afton, Wyoming, United States §

The sunniest months in Afton are June, July and August, when the sun shines an average of 12 hours 15 minutes a day.Least sunny months in Afton: January, February and December receive an average of 4 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Afton, 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 116 161 254 265 333 374 395 357 301 247 180 150
Mean daily daylight hours 9h 26m 10h 33m 11h 58m 13h 25m 14h 38m 15h 15m 14h 55m 13h 49m 12h 25m 10h 59m 9h 43m 9h 4m

Solar UV radiation in Afton, Wyoming, United States §

Afton experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, February 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 Afton UV Index data.

Average daily maximum UV levels by month for Afton, 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) 3 5 8 10 12 12 11 11 9 6 5 3