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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Butte Mooney Airport, MT
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September
Average Temperature
High
20°
Feels 19
Low
4°
Feels 2
Average Precipitation
5 Days
Rain amount
11.9mm
Snow amount
0.2cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
20°
3
20°
4
20°
5
21°
6
23°
7
15°
8
18°
9
21°
10
21°
11
20°
12
18°
13
18°
14
19°
15
20°
16
20°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Wednesday, September 2, 2026
Day
20°
Feels 20
Wind
40 km/h SE
Gust
60 km/h
Humidity
30%
P.O.P
60%
Rain
1-3 mm
Night
7°
Feels 5
Wind
24 km/h SE
Gust
36 km/h
Humidity
66%
P.O.P
20%
Historical Averages
Sep 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.