Missoula (MT)
August
Weather in Missoula, Montana for August 2026
Your guide to Missoula weather in August - trends and predictions
In general, the average temperature in Missoula at the beginning of August is 28.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 26.1 °F by the end of August.
With an average of 5 rainy days, Missoula experiences minimal rainfall in August.
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Temperatures
Rain 🌧️
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26
Dry days
5
Rainy days
0
Snow days
28°/10°
Temperatures
13 km/h
Avg max wind
51 %
Avg humidity
Missoula Weather August
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Temperatures trend during August in Missoula
See the weather trend as well as the moving average line
August weather in Missoula day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Sunny | 33° /13° | 0 mm | 9 | |
| Aug. 2 | Sunny | 29° /15° | 0.6 mm | 7 | |
| Aug. 3 |  Overcast | 32° /14° | 0 mm | 7 | |
| Aug. 4 |  Moderate rain at times | 22° /14° | 7.5 mm | 5 | |
| Aug. 5 | Overcast | 29° /11° | 2.9 mm | 7 | |
| Aug. 6 |  Patchy rain possible | 30° /13° | 0.1 mm | 7 | |
| Aug. 7 | Overcast | 24° /13° | 0 mm | 6 | |
| Aug. 8 |  Partly cloudy | 21° /9° | 4 mm | 6 | |
| Aug. 9 | Sunny | 27° /11° | 0 mm | 7 | |
| Aug. 10 | Patchy rain possible | 28° /12° | 0.3 mm | 7 | |
| Aug. 11 | Sunny | 29° /13° | 0 mm | 7 | |
| Aug. 12 |  Cloudy | 30° /13° | 0 mm | 7 | |
| Aug. 13 | Moderate or heavy rain shower | 28° /15° | 3.8 mm | 7 | |
| Aug. 14 | Overcast | 26° /13° | 0 mm | 7 | |
| Aug. 15 | Sunny | 28° /12° | 0.5 mm | 7 | |
| Aug. 16 | Moderate or heavy rain shower | 26° /12° | 0.9 mm | 6 | |
| Aug. 17 | Sunny | 28° /11° | 0 mm | 7 | |
| Aug. 18 | Overcast | 31° /12° | 0 mm | 7 | |
| Aug. 19 | Moderate or heavy rain shower | 31° /14° | 1.9 mm | 8 | |
| Aug. 20 | Cloudy | 28° /12° | 0 mm | 6 | |
| Aug. 21 | Overcast | 26° /11° | 0 mm | 7 | |
| Aug. 22 | Sunny | 28° /10° | 0 mm | 7 | |
| Aug. 23 | Cloudy | 31° /11° | 0 mm | 8 | |
| Aug. 24 | Patchy rain possible | 26° /11° | 0.1 mm | 6 | |
| Aug. 25 | Partly cloudy | 26° /12° | 0 mm | 7 | |
| Aug. 26 | Sunny | 28° /11° | 0 mm | 7 | |
| Aug. 27 | Patchy rain possible | 27° /12° | 2.3 mm | 6 | |
| Aug. 28 | Overcast | 17° /10° | 34.3 mm | 4 | |
| Aug. 29 | Sunny | 25° /7° | 0 mm | 7 | |
| Aug. 30 | Sunny | 29° /10° | 0 mm | 8 | |
| Aug. 31 | Sunny | 31° /11° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Missoula in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Missoula forecast closer to your planned date for the most up-to-date weather information.
Change Month
Missoula in August - FAQ
What are the expected maximum and minimum temperatures in Missoula during August?
Enjoy moderate daytime temperatures of up to 28° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Missoula during August?
In August, Missoula can expect light to moderate rainfall, totaling 20.6 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Missoula during August?
The average wind speed in Missoula during August is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Missoula
Explore the daily rainfall trends and prepare for Missoulas August weather 💧
UV exposure in Missoula during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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