Spring (March–May): Average 37–54°F, climate gradually transitions from cold to warm, rainfall increases, May is the peak of the rainy season. Common activities: flower viewing, hiking. Recommended clothing: warm jacket, layered clothing.
Summer (June–August): Average 61–72°F, warm and dry climate, less rainfall, abundant sunshine. Common activities: camping, fishing, rafting. Recommended clothing: light and breathable clothing, hat, sunscreen.
Autumn (September–November): Average 48–61°F, cool climate, moderate rainfall, leaves changing color. Common activities: fall foliage viewing, hiking, picking. Recommended clothing: warm jacket, long-sleeved clothing.
Winter (December–February): Average -5.1–-35.1°F, cold climate, moderate snowfall, temperatures below freezing. Common activities: skiing, snowshoeing. Recommended clothing: warm jacket, hat, gloves, scarf, snow boots.
Missoula climatological average
Annual average temperature: approx. 46.9°F / Annual rainfall: approx. 302 mm / Summer humidity: 60%–70% / Rainiest month: May
Missoula monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
22.8°F
25.7
February
28.9°F
20
March
37.9°F
13.7
April
43.7°F
25
May
54.9°F
49.7
June
61.9°F
42.7
July
72.9°F
7.3
August
70.9°F
25.7
September
61.5°F
35.3
October
48.2°F
12.3
November
32°F
24
December
28°F
20.7
Missoula weather for the next seven days
12/16
Tuesday
Patchy rain nearby
45°F/38.3°F
12/17
Wednesday
Moderate rain
41.5°F/31.3°F
12/18
Thursday
Moderate or heavy snow showers
33.8°F/30.2°F
12/19
Friday
Patchy rain nearby
38.7°F/22.4°F
12/20
Saturday
Light snow
31.8°F/21.1°F
12/21
Sunday
Partly Cloudy
33°F/18.8°F
12/22
Monday
Patchy rain nearby
38.2°F/20.7°F
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