Bozeman, MT Climate & Monthly Averages
Bozeman has a humid continental climate. July is the hottest month, averaging 81° by day; February is the coldest at 32°.
Winter sets the pace in 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.
July
81° by day 54° at nightFebruary
32° by day 13° at nightThe cold-weather pattern in numbers
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.
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.
More climate facts for Bozeman
- 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%
From snow season to the warmest stretch 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.
The coldest and warmest values in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
Planning around winter in Bozeman
The easier weather window
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.
Cold-weather packing
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.
Monthly highs, lows and seasonal change
| 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% |
The route from winter to summer, month by month
Each card shows the average high and low. The bar places that month between Bozeman's coldest night and 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
Looking for warmer alternatives? Browse warm places by month, or compare Bozeman's coolest part of the year: February, January, December.
Where Bozeman sits among other climates
- Bozeman averages 43°F (6°C) across the year - cooler than almost every other city we track.
These comparisons use the same ten-year window for every city in the dataset.