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Monthly climate in Bozeman, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bozeman features a humid continental climate (Dfb).Temperatures typically range between -8 °C (18 °F) and 18 °C (65 °F) through the year, but rarely can drop to -36 °C (-32 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 733 mm (28.9 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually.Bozeman enjoys an average of 3141 hours of sunshine throughout the year, and daylight varies from 8 hours 43 minutes to 15 hours 37 minutes per day.

Monthly average temperatures in Bozeman, Montana, United States §

The warmest months in Bozeman are June, July and August, with daily mean temperatures ranging from 14 to 18 °C (57 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -7 °C (18 - 20 °F) throughout the day. On average each year, Bozeman experiences 45 days above 25 °C (77.0 °F) and 191 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bozeman, 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 6°C
(43°F)		 9°C
(48°F)		 16°C
(61°F)		 22°C
(72°F)		 25°C
(77°F)		 33°C
(92°F)		 34°C
(94°F)		 33°C
(92°F)		 33°C
(92°F)		 25°C
(78°F)		 19°C
(66°F)		 14°C
(57°F)
Mean maximum 4°C
(39°F)		 7°C
(45°F)		 12°C
(54°F)		 19°C
(67°F)		 23°C
(74°F)		 26°C
(80°F)		 31°C
(89°F)		 32°C
(90°F)		 30°C
(86°F)		 21°C
(70°F)		 13°C
(56°F)		 7°C
(45°F)
Average high -2°C
(28°F)		 -3°C
(26°F)		 4°C
(39°F)		 7°C
(46°F)		 14°C
(58°F)		 21°C
(69°F)		 26°C
(80°F)		 25°C
(78°F)		 20°C
(68°F)		 10°C
(49°F)		 3°C
(38°F)		 -2°C
(29°F)
Daily mean -7°C
(20°F)		 -8°C
(18°F)		 -2°C
(29°F)		 2°C
(35°F)		 8°C
(46°F)		 14°C
(57°F)		 18°C
(65°F)		 17°C
(64°F)		 12°C
(54°F)		 3°C
(38°F)		 -2°C
(28°F)		 -7°C
(20°F)
Average low -11°C
(12°F)		 -12°C
(10°F)		 -6°C
(21°F)		 -4°C
(25°F)		 2°C
(35°F)		 7°C
(45°F)		 10°C
(50°F)		 9°C
(49°F)		 5°C
(41°F)		 -3°C
(28°F)		 -8°C
(19°F)		 -12°C
(11°F)
Mean minimum -25°C
(-12°F)		 -27°C
(-17°F)		 -18°C
(0°F)		 -14°C
(7°F)		 -6°C
(21°F)		 1°C
(33°F)		 4°C
(40°F)		 4°C
(40°F)		 -3°C
(27°F)		 -15°C
(5°F)		 -18°C
(-0°F)		 -23°C
(-10°F)
Minimum -29°C
(-20°F)		 -36°C
(-32°F)		 -28°C
(-18°F)		 -20°C
(-4°F)		 -10°C
(13°F)		 -0°C
(32°F)		 0°C
(33°F)		 2°C
(36°F)		 -4°C
(25°F)		 -27°C
(-17°F)		 -22°C
(-7°F)		 -29°C
(-20°F)

Compare climate in Bozeman with other places

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

Monthly average precipitation in Bozeman, Montana, United States §

Bozeman usually has the most precipitation in April, May and June, with an average of 15 rainy days and 97 mm (3.8 inches) of precipitation per month.The driest months in Bozeman are January, July and December. On average, 35 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bozeman, 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) 30 (1.2) 65 (2.5) 47 (1.8) 86 (3.4) 102 (4.0) 104 (4.1) 39 (1.5) 48 (1.9) 59 (2.3) 68 (2.7) 50 (2.0) 37 (1.5)
Average precipitation days (≥ 1 mm) 8 14 11 15 18 14 8 8 7 13 11 10

Monthly sunshine hours in Bozeman, Montana, United States §

The sunniest months in Bozeman are June, July and August, when the sun shines an average of 11 hours 46 minutes a day.Least sunny months in Bozeman: January, February and December receive an average of 5 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bozeman, 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 144 174 266 272 310 349 388 344 277 238 191 181
Mean daily daylight hours 9h 8m 10h 23m 11h 57m 13h 34m 14h 56m 15h 37m 15h 15m 14h 1m 12h 28m 10h 52m 9h 27m 8h 43m

Solar UV radiation in Bozeman, Montana, United States §

Bozeman 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, November 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 Bozeman UV Index data.

Average daily maximum UV levels by month for Bozeman, 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 5 7 8 11 11 10 10 8 6 4 2