Bozeman, MT Climate & Monthly Averages
The climate of Bozeman
Cold is the baseline in Bozeman, not the exception. Night-time lows sit at or below freezing in 6 months of the year, and the warmest month, July, still only averages 81°F (27°C) by day. February runs to 13°F (-10°C) after dark.
Climate quick facts
- Hottest month: July - highs near 81°F (27°C)
- Coldest month: February - highs near 32°F (0°C)
- Decade extremes (2015-2024): 96°F (36°C) high · -34°F (-36°C) low
- Wettest month: May (12 rainy days) · Sunniest: July (14.2 h sun/day)
- Climate type: humid continental
- Annual swing: 25°C between the average warmest and coolest month · day to night: 12°C
- Snow: about 43 days a year
- Months with freezing average lows: 6
- Average humidity: 61%
Temperatures through the year
February sits at the other end of the year: 32°F (0°C) by day, 13°F (-10°C) at night. Warmth peaks in July: highs of 81°F (27°C), lows of 54°F (12°C). Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 96°F (36°C) and the lowest daily minimum -34°F (-36°C). Snow falls on roughly 43 days a year, mostly October through May.
Rain, sun and snow
Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is August through September. Relative humidity averages 61% across the year, drier than about 84% of the cities we track. Days and nights are about 12°C apart on average - wider than 91% of the 3496 cities in our dataset. Overnight lows average at or below freezing for 6 months, November through April.
How Bozeman compares
- Bozeman averages 43°F (6°C) across the year - cooler than almost every other city we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 33° | 15° | 8 | 1.1 in | 6.9 h/day | 9.1 h | 25% | 66% |
| February | 32° | 13° | 10 | 1.7 in | 7.5 h/day | 10.3 h | 35% | 66% |
| March | 42° | 22° | 10 | 1.7 in | 9.3 h/day | 11.8 h | 33% | 64% |
| April | 51° | 28° | 13 | 2.8 in | 10.3 h/day | 13.5 h | 42% | 63% |
| May | 60° | 38° | 12 | 3.0 in | 11.6 h/day | 14.9 h | 38% | 64% |
| June | 72° | 47° | 10 | 2.5 in | 12.9 h/day | 15.7 h | 33% | 58% |
| July | 81° | 54° | 4 | 0.8 in | 14.2 h/day | 15.4 h | 13% | 48% |
| August | 80° | 53° | 4 | 0.8 in | 12.4 h/day | 14.1 h | 13% | 48% |
| September | 70° | 45° | 8 | 1.9 in | 10.5 h/day | 12.5 h | 27% | 56% |
| October | 54° | 33° | 10 | 2.3 in | 8.6 h/day | 10.8 h | 34% | 64% |
| November | 40° | 21° | 9 | 1.5 in | 7.0 h/day | 9.4 h | 29% | 66% |
| December | 33° | 15° | 8 | 1.3 in | 6.1 h/day | 8.7 h | 27% | 64% |
Bozeman month by month
Average high and low for each month, with the bar showing where it sits in Bozeman's year (left is the coldest night, right is the warmest afternoon).
January
- Rain
- 8 days
- Sunshine
- 6.9 h
- Daylight
- 9.1 h
- Snow
- 5 days
February
- Rain
- 10 days
- Sunshine
- 7.5 h
- Daylight
- 10.3 h
- Snow
- 7 days
March
- Rain
- 10 days
- Sunshine
- 9.3 h
- Daylight
- 11.8 h
- Snow
- 6 days
April
- Rain
- 13 days
- Sunshine
- 10.3 h
- Daylight
- 13.5 h
- Snow
- 6 days
May
- Rain
- 12 days
- Sunshine
- 11.6 h
- Daylight
- 14.9 h
- Snow
- 2 days
June
- Rain
- 10 days
- Sunshine
- 12.9 h
- Daylight
- 15.7 h
July
- Rain
- 4 days
- Sunshine
- 14.2 h
- Daylight
- 15.4 h
August
- Rain
- 4 days
- Sunshine
- 12.4 h
- Daylight
- 14.1 h
September
- Rain
- 8 days
- Sunshine
- 10.5 h
- Daylight
- 12.5 h
October
- Rain
- 10 days
- Sunshine
- 8.6 h
- Daylight
- 10.8 h
- Snow
- 3 days
November
- Rain
- 9 days
- Sunshine
- 7.0 h
- Daylight
- 9.4 h
- Snow
- 6 days
December
- Rain
- 8 days
- Sunshine
- 6.1 h
- Daylight
- 8.7 h
- Snow
- 7 days
Warmer places to go, by month: January · February · March · April · May · June · July · August · September · October · November · December
Seasons in Bozeman
Spring (March through May)
Through spring, Bozeman is chilly: 51°F (10°C) by day, 29°F (-2°C) after dark, and rain falls on around 35 of the 90 days, plus about 14 snowy days. Daylight is generous - around 10.4 hours of sun a day.
Summer (June through August)
Summer is mild and warm here - highs near 77°F (25°C), nights near 51°F (11°C), and expect showers on roughly 18 days across the season. Daylight is generous - around 13.2 hours of sun a day.
Fall (September through November)
Fall is mild here - highs near 55°F (13°C), nights near 33°F (1°C), and expect showers on roughly 27 days across the season, plus about 9 snowy days.
Winter (December through February)
Through winter, Bozeman is bitterly cold: 32°F (0°C) by day, 14°F (-10°C) after dark, and expect showers on roughly 26 days across the season, plus about 19 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Climate questions, answered
Does it freeze in Bozeman?
Is Bozeman warmer or cooler than most cities?
How much sun does Bozeman get?
How many rainy days does Bozeman get in a year?
Is Bozeman cold in winter?
How hot does Bozeman get in summer?
Best time to visit Bozeman
May to September is the sweet spot for Bozeman - these are the warmest and brightest weeks of the year. Expect 72°F (22°C) in the afternoon and around 8 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in May.
Pack for Bozeman with light clothing for the warm months, a heavy insulated coat, hat and gloves for winter and a compact umbrella or rain shell. July nights average 54°F (12°C), so evenings rarely match the afternoons.
Bozeman temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need the precipitation in other units? The mm-to-inches rainfall converter handles it.