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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Montana City, MT
Content continues below
May
Average Temperature
High
18°
Feels 17
Low
4°
Feels 2
Average Precipitation
10 Days
Rain amount
32mm
Snow amount
0.3cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
11°
19
16°
20
15°
21
13°
22
18°
23
22°
24
24°
25
25°
26
19°
27
21°
28
19°
29
18°
30
18°
31
20°
Forecast
Monday, May 18, 2026
Day
11°
Feels 10
Wind
14 km/h NW
Gust
21 km/h
Humidity
30%
P.O.P
40%
Rain
<1 mm
Night
0°
Feels -2
Wind
9 km/h S
Gust
14 km/h
Humidity
69%
P.O.P
40%
Rain
<1 mm
Historical Averages
May 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.