Annual mean 8°C · wettest around February · prevailing wind W
Warmest
29.1 °C
Coldest
-3.0 °C
Wettest
25%
Windiest
3.9 m/s
Prevailing
W
2.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Missoula over the whole year is 8°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -6°C. Missoula has no sharply defined rainy season: the chance of rain on a given day runs from 12% in September, the driest month, to 25% in February, the wettest. Winds in Missoula are highest in April, averaging 2.8 m/s (10 km/h), and lightest in January, at 1.8 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Missoula come in July, when the sky is typically 11% covered; December is the cloudiest month, at 64%.
Month by month Missoula climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-2°C
-6°C
-6°C
15%
63%
1.8 m/s
0
0
0
February
-1°C
-5°C
-5°C
25%
62%
2.5 m/s
0
0
4
March
6°C
-2°C
2°C
21%
51%
2.5 m/s
1
0
20
April
11°C
2°C
7°C
22%
47%
2.8 m/s
11
0
50
May
17°C
8°C
13°C
24%
43%
2.8 m/s
43
4
73
June
21°C
12°C
19°C
23%
32%
2.6 m/s
67
20
67
July
28°C
15°C
25°C
12%
11%
2.4 m/s
65
59
33
August
26°C
13°C
24°C
14%
15%
2.3 m/s
72
50
42
September
20°C
8°C
17°C
12%
30%
2.1 m/s
64
13
74
October
11°C
2°C
8°C
17%
42%
2.0 m/s
21
0
58
November
4°C
-2°C
-0°C
20%
54%
2.0 m/s
0
0
13
December
-1°C
-4°C
-5°C
20%
64%
1.8 m/s
0
0
2
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Missoula weather by season
Year round, Missoula has days of about -2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -6°C to 15°C through the year, and the average temperature over the year is 8°C around the clock. Rain is most likely around February and least likely around September. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Missoula weather in winterDecember to February
High -1°CLow -5°CRain 20%
Winter in Missoula has typical daily highs of about -1°C and lows of about -5°C, with a 20% chance of rain on a given day.
Missoula weather in springMarch to May
High 11°CLow 3°CRain 23%
Spring in Missoula has typical daily highs of about 11°C and lows of about 3°C, with a 23% chance of rain on a given day.
Missoula weather in summerJune to August
High 25°CLow 14°CRain 16%
Summer in Missoula has typical daily highs of about 25°C and lows of about 14°C, with a 16% chance of rain on a given day.
Missoula weather in autumnSeptember to November
High 12°CLow 3°CRain 16%
Autumn in Missoula has typical daily highs of about 12°C and lows of about 3°C, with a 16% chance of rain on a given day.
When is the rainy season in Missoula?
Missoula has no sharply defined rainy season: the chance of rain on a given day runs from 12% in September, the driest month, to 25% in February, the wettest.
What time of year is Missoula windiest?
Winds in Missoula are highest in April, averaging 2.8 m/s (10 km/h), and lightest in January, at 1.8 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Missoula year round?
The average temperature in Missoula over the whole year is 8°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -6°C.