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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Helena Regional Airport, MT
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September
Average Temperature
High
22°
Feels 21
Low
7°
Feels 6
Average Precipitation
7 Days
Rain amount
22.4mm
Snow amount
0.5cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
23°
4
22°
5
22°
6
23°
7
19°
8
23°
9
24°
10
26°
11
23°
12
21°
13
21°
14
22°
15
22°
16
22°
17
21°
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Thursday, September 3, 2026
Day
23°
Feels 23
Wind
28 km/h E
Gust
42 km/h
Humidity
27%
P.O.P
20%
Night
9°
Feels 7
Wind
26 km/h SW
Gust
39 km/h
Humidity
71%
P.O.P
20%
Historical Averages
Sep 3
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.