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Missoula, MT Weather Tomorrow

Prepare for the week ahead with tomorrow's Missoula weather forecast and a complete 5 day outlook covering precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction throughout the Missoula area.
Updated: Sat Sep 12th 2026 9:15 AM MDT
Missoula, MT Weather – 9-12 – Overcast
70° / 48°
Overcast
Overcast is in the forecast for Missoula, with a high of 70°F and a low of 48°F. There might be light rainfall having a 11% chance. Winds will be light at 6mph and gusts of 16.3mph at 4 PM. Humidity levels should be comfortable, sitting around 55% on average, the maximum being 82% at 11 PM and 35% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 10 AM, a lowest point of 29.84inHg at 6 PM with an avg 29.91inHg.
Missoula, MT Weather – 9-13 – Overcast
61° / 41°

Weather Tomorrow

Overcast
Daytime highs will reach 61°F with lows dropping to 41°F in Missoula, where it will be overcast. Rainfall predicted to have a 68% chance with an estimated 0.15in. Wind will be moderate, blowing around 13mph on average and gusts of 17.3mph at 5 PM. The humidity will be on the higher side, averaging about 68%, the maximum being 93% at 6 AM and 38% being its lowest at 4 PM. Barometric pressure is its highest of 29.96inHg at 11 PM, a lowest point of 29.78inHg at 4 PM with an avg 29.86inHg.
Missoula, MT Weather – 9-14 – Scattered Showers
58° / 41°
Scattered Showers
Passing showers are in the forecast for Missoula, with a high of 58°F and a low of 41°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Winds will be light at 7mph and gusts of 12.1mph at 8 PM. The humidity will be on the higher side, averaging about 68%, the maximum being 86% at 7 AM and 41% being its lowest at 5 PM. Barometric pressure is its highest of 30.09inHg at 11 PM, a lowest point of 29.94inHg at 4 AM with an avg 30.02inHg.
Missoula, MT Weather – 9-15 – Overcast
67° / 40°
Overcast
Highs will reach 67°F with lows near 40°F in Missoula, where cloud-filled skies are. There might be light rainfall having a 13% chance. Winds will be light at 4mph and gusts of 13.4mph at 3 AM. The humidity will be on the higher side, averaging about 61%, the maximum being 85% at 5 AM and 29% being its lowest at 3 PM. Barometric pressure is its highest of 30.14inHg at 11 PM, a lowest point of 29.83inHg at 6 PM with an avg 30inHg.
Missoula, MT Weather – 9-16 – Sunny
68° / 38°
Sunny
In Missoula, it will be sunny with highs near 68°F and lows around 38°F. Rainfall predicted to have a 57% chance with an estimated 0.09in. Winds will be light at 4mph and gusts of 8.3mph at 12 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 95% at 5 AM and 33% being its lowest at 3 PM. Barometric pressure is its highest of 30.33inHg at 8 AM, a lowest point of 29.97inHg at 12 AM with an avg 30.15inHg.
Missoula, MT Weather – 9-17 – Sunny
74° / 43°
Sunny
Daytime highs will reach 74°F with lows dropping to 43°F in Missoula, where bright and sunny conditions. There's a very small chance of rainfall, only about 2%. Winds will be light at 4mph and gusts of 4mph at 5 PM. Humidity levels should be comfortable, sitting around 54% on average, the maximum being 78% at 6 AM and 27% being its lowest at 3 PM. Barometric pressure is its highest of 30.22inHg at 6 AM, a lowest point of 30.02inHg at 6 PM with an avg 30.15inHg.

Currently

Overcast 55°F
30.04 inHg.
Barometer
59%
Humidity
ENE 4 mph
Wind
Overcast

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