Missoula climate — normals and trends
Missoula (United States) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.1 °C and it receives 537 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (19.7 °C on average) and the coldest is January (-5.8 °C). Rainfall peaks in May.
Missoula averages 177 frost days, 23 hot days (≥ 30 °C) and 117 rainy days per year.
Missoula has warmed by +3.1 °C between 1940 and 2025, or +0.36 °C per decade. This trend is statistically significant.
The number of frost days there went from about 195 to 159 per year over the period.
The hottest day of the period reached 38.6 °C (on 22 July 2006) and the coldest -43.2 °C (on 13 January 2024).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MissoulaMontana
- coords
- 46.87°, -113.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.1°C
Average daily high
12.1°C
Average daily low
0.2°C
Annual rainfall
537mm
Sunshine / day
9.8h
Mean relative humidity
63%
Average peak wind
9.9km/h
Seasonal range
25.5°C
Frost days (< 0 °C)
177 d/yr
Hot days (≥ 30 °C)
23 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
152.2 cm
Average feels-like high
9.5 °C
Average feels-like low
-2.9 °C
Average peak gust
33.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
15.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.1 °C
since 1940
+0.4 °C per decade · r² = 0.61 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.6 °C
22 July 2006
Coldest day
-43.2 °C
13 January 2024
Wettest day
50 mm
8 June 1964
Windiest day
30.1 km/h
16 October 1991
Strongest gust
115.6 km/h
17 December 2025
Hottest feels-like
39.7 °C
11 July 2002
Coldest feels-like
-47.9 °C
13 January 2024
Snowiest day
19.3 cm
29 December 2017
Sunniest day
15.2 h
25 June 2007
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -0.3 °C | +1.1 °C | 34 mm | -19 mm |
| Feb | -0.5 °C | -2.2 °C | 84 mm | +39 mm |
| Mar | 9.6 °C | +3.9 °C | 53 mm | +7 mm |
| Apr | 13.6 °C | +2.8 °C | 36 mm | -13 mm |
| May | 20.6 °C | +4.1 °C | 26 mm | -34 mm |
| Jun | 24.8 °C | +3.7 °C | 25 mm | -31 mm |
| Jul | 29.8 °C | +2.3 °C | 14 mm | -9 mm |
| Aug | 28.4 °C | +1.5 °C | 23 mm | -1 mm |
| Sep | 26.4 °C | +5.6 °C | 14 mm | -21 mm |
| Oct | 12.9 °C | -0.1 °C | 56 mm | +15 mm |
| Nov | 7.7 °C | +3.7 °C | 56 mm | +4 mm |
| Dec | 4.3 °C | +5.3 °C | 146 mm | +92 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Missoula?
Missoula has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.1 °C and it receives 537 mm of precipitation per year.
What is the hottest day ever recorded in Missoula?
The hottest day measured in Missoula between 1940 and 2025 was 22 July 2006, reaching 38.6 °C.
What is the coldest day in Missoula?
The coldest day measured in Missoula between 1940 and 2025 was 13 January 2024, at -43.2 °C.
Does it snow in Missoula?
Yes. Missoula gets on average 152.2 cm of snow per year and has around 177 frost days.
Has the climate of Missoula warmed?
Yes: Missoula warmed by +3.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Missoula?
The wettest day measured in Missoula between 1940 and 2025 was 8 June 1964, with 50 mm of rain in 24 hours.
What was the windiest day in Missoula?
The windiest day measured in Missoula between 1940 and 2025 was 16 October 1991, with winds reaching 30.1 km/h.
What is the warmest month in Missoula?
The warmest month in Missoula is July (19.7 °C on average); the coldest is January (-5.8 °C).
How much does it rain in Missoula?
Missoula receives on average 537 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Missoula?
Missoula gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Missoula?
The heaviest 24-hour snowfall measured in Missoula between 1940 and 2025 was 29 December 2017, with 19.3 cm.
Are there tropical nights in Missoula?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Missoula.
What was the most extreme apparent temperature in Missoula?
In Missoula, between 1940 and 2025, the highest apparent temperature reached 39.7 °C on 11 July 2002, and the lowest was -47.9 °C on 13 January 2024.
Compare Missoula with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Missoula