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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 West Side, MT
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May
Average Temperature
High
17°
Feels 16
Low
4°
Feels 2
Average Precipitation
9 Days
Rain amount
31.5mm
Snow amount
0.2cm
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Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
19°
3
21°
4
11°
5
11°
6
19°
7
20°
8
20°
9
19°
10
20°
11
21°
12
22°
13
20°
14
20°
15
19°
16
19°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Saturday, May 2, 2026
Day
19°
Feels 19
Wind
12 km/h N
Gust
18 km/h
Humidity
28%
P.O.P
20%
Night
5°
Feels 4
Wind
13 km/h W
Gust
20 km/h
Humidity
75%
P.O.P
20%
Historical Averages
May 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.