January is one of the cooler months of the year in Bozeman, with average highs near -3.7°C and lows around -13.7°C (mean -8.7°C). It is one of the drier months, averaging 42 mm of rainfall and 94% relative humidity across the period.
January is one of the cooler months of the year in Bozeman. Across 45 years of records, the warmest January in Bozeman was 1981 — when the month averaged -2.9°C — while the coldest was 2008 at -12.1°C. Typical January days reach -3.7°C with nights near -13.7°C. The long-term January temperature trend is broadly flat.
January is one of the drier months in Bozeman, averaging 42 mm of rainfall. The wettest January on record was 1997 with 83 mm, while the driest were 1983 and 2001 at 19 mm.
Relative humidity in Bozeman during January averages 94%. The most humid January was 2010 at 98%, and the least humid was 1981 at 77%.
January receives about 1.7 kWh/m²/day of solar energy in Bozeman. The sunniest Januarys were 2001, 2007 and 2017, among others at 2 kWh/m²/day, and the cloudiest was 1989 at 1.4.
Average wind speed in Bozeman during January is 1.3 m/s. The windiest Januarys were 1990, 2008 and 2012, among others at 1.6 m/s, while the calmest were 1981 and 1985 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -8.6°C | -9.3°C | -8.7°C | -8.4°C | -8.5°C | +0.1°C |
| Avg High | -3.5°C | -4.3°C | -3.8°C | -3.6°C | -3.3°C | +0.2°C |
| Avg Low | -13.8°C | -14.4°C | -13.6°C | -13.2°C | -13.7°C | +0.1°C |
| Avg Rain | 30 mm | 48 mm | 42 mm | 50 mm | 36 mm | +6 mm |
January temperatures in Bozeman have fallen by about 0.3°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -39.1°C (1997) to a record high of 9.5°C (2024).
Rainfall in January is one of the drier months, averaging 42 mm, with a wettest year of 83 mm.
A quieter season to visit Bozeman
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Bozeman. That said, January — with days averaging -3.7°C and nights around -13.7°C (mean -8.7°C) and moderate rainfall (42 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | -5.2°C | -10.8°C | -16.3°C | 0.3°C | -33.9°C | 39 mm | 97% | 1.1 m/s | 1.9 |
| 2024 | -2.1°C | -7.3°C | -12.5°C | 9.5°C | -31.5°C | 24 mm | 88% | 1.1 m/s | 1.6 |
| 2023 | -4.2°C | -9.6°C | -15.1°C | 1.1°C | -36.6°C | 38 mm | 95% | 1.1 m/s | 1.9 |
| 2022 | -2.6°C | -7.7°C | -12.8°C | 2.1°C | -31.8°C | 29 mm | 91% | 1.4 m/s | 1.7 |
| 2021 | -2.5°C | -7.9°C | -13.3°C | 1.3°C | -22.4°C | 36 mm | 91% | 1.3 m/s | 1.8 |
| 2020 | -3.0°C | -7.6°C | -12.2°C | 0.8°C | -23.8°C | 48 mm | 95% | 1.4 m/s | 1.6 |
| 2019 | -2.8°C | -7.9°C | -13.0°C | 0.4°C | -27.0°C | 56 mm | 96% | 1.3 m/s | 1.7 |
| 2018 | -2.3°C | -6.8°C | -11.3°C | 0.4°C | -23.3°C | 64 mm | 97% | 1.4 m/s | 1.7 |
| 2017 | -6.6°C | -12.0°C | -17.3°C | 0.3°C | -31.0°C | 38 mm | 96% | 1.2 m/s | 2 |
| 2016 | -3.2°C | -7.9°C | -12.7°C | 0.3°C | -19.9°C | 37 mm | 97% | 1.3 m/s | 1.8 |
| 2015 | -1.6°C | -6.4°C | -11.1°C | 4.6°C | -20.8°C | 48 mm | 94% | 1.3 m/s | 1.7 |
| 2014 | -3.5°C | -8.2°C | -12.9°C | 0.5°C | -27.1°C | 45 mm | 94% | 1.4 m/s | 1.7 |
| 2013 | -5.1°C | -9.6°C | -14.2°C | 2.5°C | -28.1°C | 36 mm | 94% | 1.4 m/s | 1.7 |
| 2012 | -3.4°C | -7.7°C | -12.0°C | 1.9°C | -21.9°C | 45 mm | 90% | 1.6 m/s | 1.8 |
| 2011 | -4.7°C | -9.3°C | -13.9°C | 0.5°C | -30.1°C | 65 mm | 97% | 1.4 m/s | 1.5 |
| 2010 | -3.3°C | -8.6°C | -13.9°C | 0.2°C | -32.1°C | 60 mm | 98% | 1.1 m/s | 1.8 |
| 2009 | -4.0°C | -8.8°C | -13.6°C | 0.5°C | -31.3°C | 49 mm | 95% | 1.4 m/s | 1.6 |
| 2008 ❄️ | -6.9°C | -12.1°C | -17.4°C | -1.2°C | -33.4°C | 57 mm | 97% | 1.6 m/s | 1.7 |
| 2007 | -6.5°C | -11.8°C | -17.0°C | 0.3°C | -32.9°C | 31 mm | 96% | 1.4 m/s | 2 |
| 2006 | -2.9°C | -7.3°C | -11.7°C | 1.1°C | -18.6°C | 50 mm | 94% | 1.5 m/s | 1.6 |
| 2005 | -2.3°C | -7.3°C | -12.4°C | 5.7°C | -27.2°C | 26 mm | 93% | 1.2 m/s | 1.8 |
| 2004 | -4.5°C | -9.2°C | -13.8°C | 0.3°C | -32.5°C | 44 mm | 97% | 1.3 m/s | 1.6 |
| 2003 | 0.3°C | -4.7°C | -9.7°C | 4.3°C | -17.0°C | 52 mm | 88% | 1.3 m/s | 1.5 |
| 2002 | -5.2°C | -9.2°C | -13.1°C | 0.7°C | -23.3°C | 40 mm | 94% | 1.4 m/s | 1.6 |
| 2001 | -2.4°C | -8.1°C | -13.8°C | 1.4°C | -19.4°C | 19 mm | 91% | 1.1 m/s | 2 |
| 2000 | -3.9°C | -8.8°C | -13.6°C | 0.5°C | -20.5°C | 47 mm | 97% | 1.2 m/s | 1.7 |
| 1999 | -3.6°C | -8.2°C | -12.8°C | 0.4°C | -22.0°C | 65 mm | 96% | 1.4 m/s | 1.6 |
| 1998 | -3.5°C | -8.4°C | -13.3°C | 1.2°C | -25.6°C | 64 mm | 96% | 1.3 m/s | 1.7 |
| 1997 🌧️ | -5.2°C | -10.4°C | -15.7°C | 2.7°C | -39.1°C | 83 mm | 97% | 1.3 m/s | 1.6 |
| 1996 | -5.9°C | -11.5°C | -17.0°C | 0.3°C | -32.9°C | 61 mm | 97% | 1.4 m/s | 1.7 |
| 1995 | -2.8°C | -8.1°C | -13.5°C | 1.6°C | -25.6°C | 50 mm | 93% | 1.2 m/s | 1.9 |
| 1994 | -2.9°C | -7.2°C | -11.5°C | 1.6°C | -22.2°C | 34 mm | 95% | 1.3 m/s | 1.6 |
| 1993 | -5.8°C | -11.6°C | -17.5°C | 0.2°C | -27.0°C | 32 mm | 97% | 1.2 m/s | 2 |
| 1992 | -3.4°C | -8.1°C | -12.9°C | 0.7°C | -23.1°C | 20 mm | 96% | 1.4 m/s | 1.8 |
| 1991 | -5.7°C | -11.1°C | -16.5°C | -0.3°C | -32.9°C | 30 mm | 97% | 1.4 m/s | 1.7 |
| 1990 | -3.8°C | -8.5°C | -13.2°C | 0.7°C | -24.6°C | 40 mm | 95% | 1.6 m/s | 1.7 |
| 1989 | -5.1°C | -10.0°C | -14.8°C | 0.4°C | -23.1°C | 46 mm | 97% | 1.6 m/s | 1.4 |
| 1988 | -5.5°C | -10.8°C | -16.1°C | 1.3°C | -28.4°C | 30 mm | 95% | 1.4 m/s | 1.7 |
| 1987 | -3.8°C | -8.8°C | -13.7°C | 2.8°C | -23.6°C | 26 mm | 89% | 1.3 m/s | 1.7 |
| 1986 | -1.3°C | -6.0°C | -10.6°C | 3.9°C | -18.0°C | 30 mm | 92% | 1.5 m/s | 1.6 |
| 1985 | -5.5°C | -11.4°C | -17.3°C | 0.2°C | -35.5°C | 24 mm | 95% | 1 m/s | 1.9 |
| 1984 | -4.7°C | -9.2°C | -13.8°C | 1.6°C | -31.7°C | 26 mm | 94% | 1.5 m/s | 1.6 |
| 1983 | -1.9°C | -6.9°C | -11.9°C | 0.8°C | -16.9°C | 19 mm | 95% | 1.4 m/s | — |
| 1982 | -6.4°C | -11.8°C | -17.2°C | 0.3°C | -31.0°C | 49 mm | 97% | 1.5 m/s | — |
| 1981 🔥 | 2.7°C | -2.9°C | -8.4°C | 8.9°C | -14.8°C | 20 mm | 77% | 1 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around -3.7°C with lows near -13.7°C (mean -8.7°C), based on 45 years of NASA POWER data.
January averages 42 mm of rainfall in Bozeman, one of the drier months. The wettest on record was 83 mm in 1997.
The hottest January reached 9.5°C in 2024. The coldest dipped to -39.1°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have fallen by about 0.3°C. Daytime highs moved from -3.2°C to -3.3°C and overnight lows from -13.7°C to -14°C over the same span.
January is one of the cooler months of the year in Bozeman and one of the drier months, so plan for around -3.7°C daytime highs and -13.7°C at night.
Yes — January is the coldest month of the year in Bozeman, averaging -8.7°C.
For January in Bozeman, pack warm layers and a jacket for chilly mornings, with typical highs of -3.7°C and lows of -13.7°C.
Relative humidity in January averages 94% — quite humid.
Average wind speed in January is 1.3 m/s. The windiest January on record averaged 1.6 m/s (1989).
The wettest January on record was 1997 with 83 mm. On average, January sees 42 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Bozeman behaves each January, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for January specifically, along with year-by-year records and how the month has changed over the decades.
