Weather in Missoula: September
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Average day temperature: | 72.9°F |
| Average night temperature: | 52.3°F | |
 |
Number of sunny days: | 19 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.7 in. | |
| more information | ||
14 days
forecast
forecast
| Missoula |
weather in
October
October
| Missoula |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 89°F. At the same time the lowest night temperature was 47°F. Daily and nightly averages during September were 74.7°F and 56.0°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Missoula in September is 0.7 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 3.5 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 9.3.
Best time for vacation in Missoula
Missoula on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Missoula
Local time: 04:10
September 19, saturday
0600
52°F
E
1 mph
1 mph
0900
52°F
S
3 mph
3 mph
1200
55°F
SW
2 mph
2 mph
1500
57°F
N
3 mph
3 mph
1800
59°F
N
5 mph
5 mph
2100
50°F
N
4 mph
4 mph
September 20, sunday
0000
48°F
N
4 mph
4 mph
0300
46°F
N
4 mph
4 mph
