nomadseason

Monthly climate in Butte, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Butte features a humid continental climate (Dfb).Temperatures typically range between -9 °C (17 °F) and 17 °C (64 °F) through the year, but rarely can drop to -32 °C (-25 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 568 mm (22.4 inches) and receives 121 rainy days on the 1 mm (0.04 inches) threshold annually.Butte enjoys an average of 3176 hours of sunshine throughout the year, and daylight varies from 8 hours 41 minutes to 15 hours 40 minutes per day.

Monthly average temperatures in Butte, Montana, United States §

The warmest months in Butte are June, July and August, with daily mean temperatures ranging from 13 to 17 °C (55 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -8 °C (17 - 18 °F) throughout the day. On average each year, Butte experiences 39 days above 25 °C (77.0 °F) and 201 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Butte, Montana, 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)		 12°C
(54°F)		 20°C
(67°F)		 24°C
(75°F)		 31°C
(88°F)		 33°C
(91°F)		 33°C
(92°F)		 31°C
(88°F)		 23°C
(74°F)		 16°C
(62°F)		 14°C
(57°F)
Mean maximum 3°C
(38°F)		 6°C
(43°F)		 10°C
(50°F)		 16°C
(61°F)		 22°C
(72°F)		 25°C
(77°F)		 31°C
(88°F)		 31°C
(88°F)		 29°C
(85°F)		 19°C
(67°F)		 11°C
(53°F)		 6°C
(43°F)
Average high -3°C
(27°F)		 -4°C
(26°F)		 3°C
(37°F)		 6°C
(44°F)		 13°C
(56°F)		 20°C
(67°F)		 26°C
(79°F)		 25°C
(77°F)		 19°C
(66°F)		 9°C
(48°F)		 3°C
(37°F)		 -2°C
(28°F)
Daily mean -8°C
(18°F)		 -9°C
(17°F)		 -3°C
(28°F)		 1°C
(33°F)		 7°C
(45°F)		 13°C
(55°F)		 17°C
(64°F)		 16°C
(62°F)		 11°C
(53°F)		 2°C
(37°F)		 -3°C
(27°F)		 -8°C
(18°F)
Average low -13°C
(9°F)		 -13°C
(8°F)		 -8°C
(18°F)		 -5°C
(23°F)		 1°C
(33°F)		 5°C
(42°F)		 9°C
(48°F)		 8°C
(47°F)		 4°C
(39°F)		 -3°C
(26°F)		 -8°C
(17°F)		 -13°C
(8°F)
Mean minimum -26°C
(-15°F)		 -27°C
(-16°F)		 -19°C
(-3°F)		 -15°C
(6°F)		 -7°C
(20°F)		 -1°C
(30°F)		 3°C
(39°F)		 3°C
(38°F)		 -5°C
(24°F)		 -17°C
(2°F)		 -19°C
(-3°F)		 -26°C
(-14°F)
Minimum -32°C
(-25°F)		 -32°C
(-24°F)		 -29°C
(-20°F)		 -22°C
(-7°F)		 -10°C
(14°F)		 -3°C
(27°F)		 1°C
(34°F)		 2°C
(36°F)		 -6°C
(21°F)		 -29°C
(-20°F)		 -24°C
(-12°F)		 -30°C
(-21°F)

Compare climate in Butte with other places

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

Monthly average precipitation in Butte, Montana, United States §

Butte usually has the most precipitation in April, May and June, with an average of 13 rainy days and 82 mm (3.2 inches) of precipitation per month.The driest months in Butte are January, July and December. On average, 27 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Butte, Montana, 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) 22 (0.9) 58 (2.3) 39 (1.5) 63 (2.5) 89 (3.5) 94 (3.7) 29 (1.1) 31 (1.2) 38 (1.5) 42 (1.7) 34 (1.3) 30 (1.2)
Average precipitation days (≥ 1 mm) 7 15 11 12 17 12 7 7 6 10 9 8

Monthly sunshine hours in Butte, Montana, United States §

The sunniest months in Butte are June, July and August, when the sun shines an average of 11 hours 50 minutes a day.Least sunny months in Butte: January, February and December receive an average of 5 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Butte, Montana, 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 148 179 270 283 307 348 395 346 279 236 195 185
Mean daily daylight hours 9h 6m 10h 22m 11h 57m 13h 35m 14h 58m 15h 40m 15h 17m 14h 2m 12h 28m 10h 51m 9h 25m 8h 41m

Solar UV radiation in Butte, Montana, United States §

Butte experiences the highest level of ultraviolet (UV) radiation in May, June 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, February and December are in the Low / 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 Butte UV Index data.

Average daily maximum UV levels by month for Butte, Montana, 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 4 7 9 10 11 10 10 8 5 4 2