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Weather in Missoula, Montana for August 2026

Your guide to Missoula weather in August - trends and predictions

    Temperatures

  • So far, August 2026 in Missoula is slightly warmer than the historical average by 0.7 °F.

  • The forecast for the upcoming days in Missoula predicts a temperature of 32.5 °F, which is slightly above the historical average.

  • In general, the average temperature in Missoula at the beginning of August is 29 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 26.1 °F by the end of August.

    • Rain 🌧️

  • Missoula experiences moderate rainfall in August, with an average of 7 rainy days and a total precipitation of 59.2 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
24
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
27°/12°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
49 %
Avg humidity

Missoula Weather August

Move between months or click on a day
July
September
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
34°
2
Sunny
28°
3
Overcast
30°
4
Moderate rain at times
24°
5
Overcast
29°
6
Patchy rain possible
31°
7
Overcast
27°
8
Partly cloudy
25°
9
Sunny
32°
10
Sunny
32°
11
Sunny
33°
12
Sunny
32°
13
Sunny
27°
14
Sunny
29°
15
Sunny
32°
16
Sunny
34°
17
Sunny
31°
18
Sunny
31°
19
Sunny
34°
20
Sunny
36°
21
Sunny
35°
22
Sunny
37°
23
Cloudy
31°
24
Patchy rain possible
26°
25
Partly cloudy
26°
26
Sunny
28°
27
Patchy rain possible
27°
28
Overcast
17°
29
Sunny
25°
30
Sunny
29°
31
Sunny
31°

Temperatures trend during August in Missoula

See the weather trend as well as the moving average line

August weather in Missoula day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
Aug. 1 Sunny
Sunny
 34° /14° 0 mm 9
Aug. 2 Sunny
Sunny
 28° /14° 0.4 mm 8
Aug. 3 Overcast
Overcast
 30° /13° 0 mm 8
Aug. 4 Moderate rain at times
Moderate rain at times
 24° /12° 5 mm 7
Aug. 5 Overcast
Overcast
 29° /11° 1.9 mm 8
Aug. 6 Patchy rain possible
Patchy rain possible
 31° /13° 0.1 mm 8
Aug. 7 Overcast
Overcast
 27° /13° 0 mm 7
Aug. 8 Partly cloudy
Partly cloudy
 25° /11° 2.6 mm 7
Aug. 9 Sunny
Sunny
 32° /15° 0 mm 6.6
Aug. 10 Sunny
Sunny
 32° /9° 0 mm 7.4
Aug. 11 Sunny
Sunny
 33° /9° 0 mm 7.4
Aug. 12 Sunny
Sunny
 32° /9° 0.3 mm 7
Aug. 13 Sunny
Sunny
 27° /8° 0.7 mm 7
Aug. 14 Sunny
Sunny
 29° /7° 0.9 mm 7
Aug. 15 Sunny
Sunny
 32° /8° 0 mm 8
Aug. 16 Sunny
Sunny
 34° /10° 0 mm 8
Aug. 17 Sunny
Sunny
 31° /15° 0 mm 8
Aug. 18 Sunny
Sunny
 31° /10° 0 mm 8
Aug. 19 Sunny
Sunny
 34° /9° 0 mm 8
Aug. 20 Sunny
Sunny
 36° /12° 0 mm 9
Aug. 21 Sunny
Sunny
 35° /12° 0 mm 8
Aug. 22 Sunny
Sunny
 37° /11° 0 mm 9
Aug. 23 Cloudy
Cloudy
 31° /11° 0 mm 8
Aug. 24 Patchy rain possible
Patchy rain possible
 26° /11° 0.1 mm 6
Aug. 25 Partly cloudy
Partly cloudy
 26° /12° 0 mm 7
Aug. 26 Sunny
Sunny
 28° /11° 0 mm 7
Aug. 27 Patchy rain possible
Patchy rain possible
 27° /12° 2.3 mm 6
Aug. 28 Overcast
Overcast
 17° /10° 34.3 mm 4
Aug. 29 Sunny
Sunny
 25° /7° 0 mm 7
Aug. 30 Sunny
Sunny
 29° /10° 0 mm 8
Aug. 31 Sunny
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.
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Missoula in August - FAQ

What are the expected maximum and minimum temperatures in Missoula during August?
Enjoy moderate daytime temperatures of up to 27° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Missoula during August?
Moderate rainfall is anticipated in Missoula during August, with a total of 59.2 mm spread over approximately 7 days. Considering plans for rainy days is advisable.

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 💧
Typically, Missoula has 7 rainy days in August with a total of 59.2 mm of rainfall.

UV exposure in Missoula during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️

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Location coordinates Where is Missoula?

Get accurate weather forecasts for Missoula, located at latitude 46.872 and longitude -113.994. Stay updated with localized weather information tailored for Missoula.

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