March is one of the cooler months of the year in Missoula, with average highs near 3.2°C and lows around -6.6°C (mean -1.7°C). It is about average for rainfall, averaging 60 mm of rainfall and 87% relative humidity across the period.
March is one of the cooler months of the year in Missoula. Across 45 years of records, the warmest March in Missoula was 1992 — when the month averaged 2.9°C — while the coldest was 2002 at -6.6°C. Typical March days reach 3.2°C with nights near -6.6°C. The long-term trend is cooling, about 0.2°C per decade.
March is about average for rainfall in Missoula, averaging 60 mm of rainfall. The wettest March on record was 2014 with 131 mm, while the driest was 2019 at 23 mm.
Relative humidity in Missoula during March averages 87%. The most humid March was 1997 at 97%, and the least humid was 1981 at 74%.
March receives about 3.2 kWh/m²/day of solar energy in Missoula. The sunniest March was 1992 at 4 kWh/m²/day, and the cloudiest was 2003 at 2.5.
Average wind speed in Missoula during March is 0.4 m/s. The windiest Marchs were 1999 and 2019 at 0.5 m/s, while the calmest were 2011, 2014 and 2017, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -1.1°C | -1.6°C | -2.3°C | -2.2°C | -1.0°C | +0.1°C |
| Avg High | 3.7°C | 3.6°C | 2.6°C | 2.5°C | 3.9°C | +0.2°C |
| Avg Low | -5.9°C | -6.8°C | -7.2°C | -6.8°C | -6.0°C | -0.1°C |
| Avg Rain | 55 mm | 49 mm | 66 mm | 78 mm | 44 mm | -11 mm |
March temperatures in Missoula have risen by about 0.4°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -31.7°C (2019) to a record high of 20.6°C (2004).
Rainfall in March is about average for rainfall, averaging 60 mm, with a wettest year of 131 mm.
A good time to visit Missoula
March is a good time to visit Missoula, with days averaging 3.2°C and nights around -6.6°C (mean -1.7°C, cooler than Missoula's yearly average) and moderate rainfall. July and August are marginally more temperate, but March still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 5.7°C | 1.2°C | -3.4°C | 19.0°C | -10.1°C | 66 mm | 83% | 0.4 m/s | 3.1 |
| 2024 | 5.3°C | 0.2°C | -4.9°C | 15.4°C | -12.3°C | 38 mm | 80% | 0.4 m/s | 3.4 |
| 2023 | 1.0°C | -4.2°C | -9.3°C | 6.9°C | -14.7°C | 47 mm | 85% | 0.4 m/s | 3.2 |
| 2022 | 4.4°C | -0.3°C | -5.1°C | 17.3°C | -19.5°C | 41 mm | 83% | 0.4 m/s | 3.2 |
| 2021 | 4.4°C | -0.7°C | -5.9°C | 10.9°C | -14.0°C | 27 mm | 82% | 0.4 m/s | 3.6 |
| 2020 | 2.6°C | -2.3°C | -7.3°C | 9.5°C | -17.2°C | 45 mm | 85% | 0.4 m/s | 3.2 |
| 2019 | 0.0°C | -5.8°C | -11.5°C | 9.3°C | -31.7°C | 23 mm | 92% | 0.5 m/s | 3.8 |
| 2018 | 0.0°C | -4.6°C | -9.2°C | 2.1°C | -17.4°C | 68 mm | 97% | 0.4 m/s | 3.1 |
| 2017 | 3.5°C | -0.4°C | -4.3°C | 10.9°C | -12.8°C | 127 mm | 92% | 0.3 m/s | 2.6 |
| 2016 | 4.4°C | -0.1°C | -4.5°C | 11.0°C | -13.8°C | 84 mm | 85% | 0.4 m/s | 3.1 |
| 2015 | 7.0°C | 1.6°C | -3.9°C | 16.6°C | -15.7°C | 48 mm | 83% | 0.4 m/s | 3.4 |
| 2014 🌧️ | -0.3°C | -4.0°C | -7.7°C | 3.2°C | -25.7°C | 131 mm | 97% | 0.3 m/s | 3 |
| 2013 | 1.6°C | -2.8°C | -7.2°C | 12.0°C | -20.7°C | 60 mm | 91% | 0.4 m/s | 3.3 |
| 2012 | 3.2°C | -1.7°C | -6.6°C | 15.0°C | -16.3°C | 96 mm | 91% | 0.4 m/s | 2.8 |
| 2011 | 0.4°C | -3.8°C | -7.9°C | 2.6°C | -14.6°C | 89 mm | 96% | 0.3 m/s | 2.8 |
| 2010 | 4.8°C | -0.4°C | -5.6°C | 10.7°C | -11.5°C | 58 mm | 83% | 0.4 m/s | 3.6 |
| 2009 | -0.9°C | -5.6°C | -10.3°C | 6.3°C | -20.0°C | 98 mm | 95% | 0.4 m/s | 2.8 |
| 2008 | -1.1°C | -6.0°C | -10.9°C | 1.4°C | -17.5°C | 59 mm | 96% | 0.4 m/s | 3.1 |
| 2007 | 5.6°C | 0.4°C | -4.7°C | 11.6°C | -14.2°C | 49 mm | 86% | 0.4 m/s | 3.2 |
| 2006 | 3.5°C | -1.8°C | -7.2°C | 10.2°C | -14.4°C | 43 mm | 83% | 0.4 m/s | 3.1 |
| 2005 | 4.9°C | 0.1°C | -4.6°C | 11.9°C | -10.0°C | 69 mm | 82% | 0.4 m/s | 3.3 |
| 2004 | 5.9°C | 0.6°C | -4.7°C | 20.6°C | -11.7°C | 48 mm | 84% | 0.4 m/s | 3.3 |
| 2003 | 2.7°C | -1.4°C | -5.5°C | 11.4°C | -13.1°C | 113 mm | 91% | 0.4 m/s | 2.5 |
| 2002 ❄️ | -1.4°C | -6.6°C | -11.7°C | 6.4°C | -21.8°C | 85 mm | 96% | 0.4 m/s | 2.6 |
| 2001 | 3.6°C | -1.4°C | -6.3°C | 9.2°C | -15.1°C | 52 mm | 85% | 0.4 m/s | 3.1 |
| 2000 | 3.4°C | -1.3°C | -5.9°C | 11.1°C | -10.5°C | 42 mm | 85% | 0.4 m/s | 3.3 |
| 1999 | 3.1°C | -2.5°C | -8.2°C | 13.9°C | -16.9°C | 38 mm | 88% | 0.5 m/s | 3.5 |
| 1998 | 3.6°C | -1.3°C | -6.2°C | 10.6°C | -16.1°C | 54 mm | 85% | 0.4 m/s | 3.2 |
| 1997 | -0.6°C | -4.9°C | -9.1°C | 4.8°C | -22.3°C | 88 mm | 97% | 0.4 m/s | 3.2 |
| 1996 | 1.5°C | -3.8°C | -9.1°C | 9.5°C | -21.1°C | 54 mm | 87% | 0.4 m/s | 3.1 |
| 1995 | 4.1°C | -1.2°C | -6.4°C | 12.5°C | -18.5°C | 47 mm | 81% | 0.4 m/s | 3.3 |
| 1994 | 5.2°C | -0.2°C | -5.6°C | 14.6°C | -12.3°C | 25 mm | 78% | 0.4 m/s | 3.6 |
| 1993 | 3.6°C | -1.6°C | -6.8°C | 12.0°C | -19.1°C | 44 mm | 90% | 0.4 m/s | 3.3 |
| 1992 🔥 | 8.7°C | 2.9°C | -2.8°C | 14.3°C | -6.6°C | 37 mm | 75% | 0.4 m/s | 4 |
| 1991 | 2.5°C | -2.3°C | -7.0°C | 12.2°C | -12.7°C | 61 mm | 85% | 0.4 m/s | 3.2 |
| 1990 | 4.0°C | -1.2°C | -6.5°C | 11.9°C | -16.9°C | 39 mm | 81% | 0.4 m/s | 3.7 |
| 1989 | 0.5°C | -4.0°C | -8.4°C | 6.3°C | -28.3°C | 79 mm | 91% | 0.4 m/s | 2.8 |
| 1988 | 2.9°C | -1.8°C | -6.5°C | 9.6°C | -15.2°C | 59 mm | 81% | 0.4 m/s | 3.2 |
| 1987 | 4.2°C | -0.7°C | -5.7°C | 12.4°C | -18.0°C | 61 mm | 84% | 0.4 m/s | 3.4 |
| 1986 | 7.3°C | 2.2°C | -2.9°C | 15.8°C | -4.9°C | 38 mm | 82% | 0.4 m/s | 3.1 |
| 1985 | 0.5°C | -4.5°C | -9.6°C | 8.0°C | -18.8°C | 30 mm | 91% | 0.4 m/s | 3.8 |
| 1984 | 3.7°C | -0.5°C | -4.6°C | 9.3°C | -11.2°C | 59 mm | 87% | 0.3 m/s | 3.3 |
| 1983 | 5.0°C | 0.3°C | -4.5°C | 10.5°C | -12.3°C | 50 mm | 83% | 0.3 m/s | — |
| 1982 | 2.1°C | -2.5°C | -7.1°C | 7.5°C | -12.3°C | 73 mm | 88% | 0.4 m/s | — |
| 1981 | 6.8°C | 1.4°C | -3.9°C | 12.0°C | -7.5°C | 47 mm | 74% | 0.4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 3.2°C with lows near -6.6°C (mean -1.7°C), based on 45 years of NASA POWER data.
March averages 60 mm of rainfall in Missoula, about average for rainfall. The wettest on record was 131 mm in 2014.
The hottest March reached 20.6°C in 2004. The coldest dipped to -31.7°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 0.4°C. Daytime highs moved from 3.6°C to 4.2°C and overnight lows from -5.9°C to -5.7°C over the same span.
March is one of the cooler months of the year in Missoula and about average for rainfall, so plan for around 3.2°C daytime highs and -6.6°C at night.
Not quite — March is the 5th coolest month in Missoula, averaging -1.7°C.
For March in Missoula, pack warm layers and a jacket for chilly mornings, with typical highs of 3.2°C and lows of -6.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 87% — quite humid.
Average wind speed in March is 0.4 m/s. The windiest March on record averaged 0.5 m/s (1999).
The wettest March on record was 2014 with 131 mm. On average, March sees 60 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 Missoula behaves each March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
