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Monthly climate in Bar Nunn, Wyoming, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Bar Nunn features a cold semi-arid climate (BSk). Temperatures typically range between -8 °C (18 °F) and 23 °C (74 °F) through the year, but rarely can drop to -32 °C (-25 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 398 mm (15.7 inches) and receives 78 rainy days on the 1 mm (0.04 inches) threshold annually. Bar Nunn enjoys an average of 3399 hours of sunshine throughout the year, and daylight varies from 9 hours 3 minutes to 15 hours 16 minutes per day.

Monthly average temperatures in Bar Nunn, Wyoming, United States §

The warmest months in Bar Nunn are June, July and August, with daily mean temperatures ranging from 19 to 23 °C (66 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -4 °C (18 - 25 °F) throughout the day. On average each year, Bar Nunn experiences 76 days above 25 °C (77.0 °F) and 162 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bar Nunn, 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)		 13°C
(55°F)		 20°C
(69°F)		 24°C
(75°F)		 29°C
(85°F)		 38°C
(101°F)		 38°C
(100°F)		 37°C
(98°F)		 36°C
(98°F)		 27°C
(81°F)		 21°C
(70°F)		 17°C
(63°F)
Mean maximum 5°C
(42°F)		 7°C
(44°F)		 15°C
(60°F)		 22°C
(71°F)		 27°C
(80°F)		 30°C
(87°F)		 37°C
(98°F)		 35°C
(95°F)		 34°C
(94°F)		 24°C
(76°F)		 16°C
(62°F)		 10°C
(51°F)
Average high -2°C
(29°F)		 -2°C
(28°F)		 5°C
(42°F)		 11°C
(51°F)		 17°C
(62°F)		 26°C
(79°F)		 31°C
(88°F)		 29°C
(85°F)		 24°C
(75°F)		 12°C
(54°F)		 7°C
(45°F)		 0°C
(33°F)
Daily mean -6°C
(21°F)		 -8°C
(18°F)		 -0°C
(32°F)		 4°C
(40°F)		 10°C
(51°F)		 19°C
(66°F)		 23°C
(74°F)		 21°C
(71°F)		 16°C
(61°F)		 5°C
(42°F)		 1°C
(35°F)		 -4°C
(25°F)
Average low -11°C
(12°F)		 -13°C
(8°F)		 -5°C
(23°F)		 -2°C
(28°F)		 4°C
(40°F)		 11°C
(52°F)		 15°C
(59°F)		 13°C
(56°F)		 8°C
(47°F)		 -1°C
(31°F)		 -4°C
(25°F)		 -9°C
(16°F)
Mean minimum -25°C
(-13°F)		 -28°C
(-17°F)		 -18°C
(-0°F)		 -15°C
(6°F)		 -4°C
(24°F)		 4°C
(40°F)		 8°C
(47°F)		 7°C
(45°F)		 -0°C
(31°F)		 -17°C
(1°F)		 -14°C
(7°F)		 -21°C
(-6°F)
Minimum -28°C
(-19°F)		 -32°C
(-25°F)		 -29°C
(-20°F)		 -22°C
(-7°F)		 -13°C
(10°F)		 1°C
(35°F)		 7°C
(44°F)		 5°C
(42°F)		 -7°C
(19°F)		 -27°C
(-17°F)		 -23°C
(-8°F)		 -23°C
(-9°F)

Compare climate in Bar Nunn with other places

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

Monthly average precipitation in Bar Nunn, Wyoming, United States §

Bar Nunn usually has the most precipitation in March, April and May, with an average of 10 rainy days and 56 mm (2.2 inches) of precipitation per month. The driest months in Bar Nunn are January, July and August. On average, 18 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bar Nunn, 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) 20 (0.8) 30 (1.2) 47 (1.8) 56 (2.2) 65 (2.6) 30 (1.2) 19 (0.7) 15 (0.6) 25 (1.0) 41 (1.6) 26 (1.0) 24 (1.0)
Average precipitation days (≥ 1 mm) 4 7 7 11 12 5 5 3 5 8 6 5

Monthly sunshine hours in Bar Nunn, Wyoming, United States §

The sunniest months in Bar Nunn are June, July and August, when the sun shines an average of 12 hours 12 minutes a day. Least sunny months in Bar Nunn: January, February and December receive an average of 6 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bar Nunn, 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 177 218 273 288 316 378 389 354 297 249 235 219
Mean daily daylight hours 9h 25m 10h 32m 11h 58m 13h 25m 14h 39m 15h 16m 14h 56m 13h 50m 12h 26m 10h 58m 9h 42m 9h 3m

Solar UV radiation in Bar Nunn, Wyoming, United States §

Bar Nunn experiences the highest level of ultraviolet (UV) radiation in April, June and July, 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 Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Bar Nunn UV Index data.

Average daily maximum UV levels by month for Bar Nunn, 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 5 6 10 10 11 11 10 9 6 4 3

Detailed Monthly Weather Insights for Bar Nunn, Wyoming, United States

Discover in-depth weather details for every month in Bar Nunn. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Bar Nunn's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.