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Monthly climate in Powell, Wyoming, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Powell features a cold semi-arid climate (BSk).Temperatures typically range between -7 °C (20 °F) and 24 °C (75 °F) through the year, but rarely can drop to -31 °C (-24 °F) or can rise to as high as 41 °C (105 °F).The average annual precipitation amounts to about 290 mm (11.4 inches) and receives 60 rainy days on the 1 mm (0.04 inches) threshold annually.Powell enjoys an average of 3327 hours of sunshine throughout the year, and daylight varies from 8 hours 50 minutes to 15 hours 30 minutes per day.

Monthly average temperatures in Powell, Wyoming, United States §

The warmest months in Powell are June, July and August, with daily mean temperatures ranging from 19 to 24 °C (66 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -4 °C (20 - 25 °F) throughout the day. On average each year, Powell experiences 78 days above 25 °C (77.0 °F) and 150 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Powell, 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 12°C
(53°F)		 13°C
(56°F)		 25°C
(77°F)		 27°C
(81°F)		 30°C
(86°F)		 39°C
(103°F)		 41°C
(105°F)		 39°C
(103°F)		 37°C
(98°F)		 27°C
(81°F)		 19°C
(67°F)		 17°C
(63°F)
Mean maximum 8°C
(47°F)		 11°C
(52°F)		 20°C
(68°F)		 25°C
(78°F)		 29°C
(84°F)		 31°C
(88°F)		 38°C
(100°F)		 37°C
(98°F)		 34°C
(94°F)		 23°C
(74°F)		 15°C
(60°F)		 11°C
(52°F)
Average high 1°C
(34°F)		 -1°C
(30°F)		 9°C
(49°F)		 13°C
(56°F)		 19°C
(66°F)		 26°C
(79°F)		 32°C
(89°F)		 30°C
(86°F)		 23°C
(74°F)		 13°C
(55°F)		 7°C
(44°F)		 2°C
(35°F)
Daily mean -5°C
(24°F)		 -7°C
(20°F)		 3°C
(37°F)		 6°C
(44°F)		 12°C
(54°F)		 19°C
(66°F)		 24°C
(75°F)		 22°C
(71°F)		 16°C
(61°F)		 6°C
(43°F)		 1°C
(34°F)		 -4°C
(25°F)
Average low -10°C
(15°F)		 -12°C
(10°F)		 -3°C
(27°F)		 -0°C
(32°F)		 6°C
(42°F)		 11°C
(52°F)		 15°C
(59°F)		 13°C
(56°F)		 8°C
(47°F)		 0°C
(33°F)		 -4°C
(25°F)		 -9°C
(16°F)
Mean minimum -22°C
(-8°F)		 -26°C
(-15°F)		 -15°C
(4°F)		 -10°C
(14°F)		 -1°C
(31°F)		 5°C
(41°F)		 9°C
(48°F)		 7°C
(46°F)		 1°C
(34°F)		 -13°C
(9°F)		 -13°C
(9°F)		 -21°C
(-5°F)
Minimum -27°C
(-17°F)		 -31°C
(-24°F)		 -26°C
(-15°F)		 -18°C
(-0°F)		 -3°C
(27°F)		 2°C
(36°F)		 7°C
(45°F)		 6°C
(43°F)		 -1°C
(30°F)		 -25°C
(-13°F)		 -17°C
(2°F)		 -26°C
(-14°F)

Compare climate in Powell with other places

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

Monthly average precipitation in Powell, Wyoming, United States §

Powell usually has the most precipitation in April, May and June, with an average of 8 rainy days and 41 mm (1.6 inches) of precipitation per month.The driest months in Powell are January, July and August. On average, 12 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Powell, 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) 10 (0.4) 25 (1.0) 16 (0.6) 38 (1.5) 52 (2.1) 34 (1.3) 13 (0.5) 13 (0.5) 31 (1.2) 28 (1.1) 17 (0.7) 14 (0.6)
Average precipitation days (≥ 1 mm) 2 7 4 8 10 6 3 2 4 7 4 3

Monthly sunshine hours in Powell, Wyoming, United States §

The sunniest months in Powell are June, July and August, when the sun shines an average of 12 hours 7 minutes a day.Least sunny months in Powell: January, February and December receive an average of 6 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Powell, 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 162 200 278 282 322 374 390 350 292 247 219 207
Mean daily daylight hours 9h 13m 10h 26m 11h 57m 13h 31m 14h 50m 15h 30m 15h 8m 13h 57m 12h 27m 10h 54m 9h 32m 8h 50m

Solar UV radiation in Powell, Wyoming, United States §

Powell experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Powell UV Index data.

Average daily maximum UV levels by month for Powell, 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 6 8 10 11 11 10 8 6 3 2