Weather in Helena in Summer
| June | July | August | ||||
| Average day temperature: | 67.9°F | 80.4°F | 77.7°F | |||
| Average night temperature: | 49.8°F | 58.4°F | 57.5°F | |||
| Number of sunny days: | 14 days | 23 days | 22 days | |||
| Day length: | 15.6 - 15.9 h. | 14.9 - 15.8 h. | 13.4 - 14.8 h. | |||
| Number of rainy days: | 3 days | 1 day | 1 day | |||
| Precipitation totals: | 1.5 in. | 0.4 in. | 0.5 in. | |||
Day & Night air temperature, °F
June
July
August
0
13
26
39
52
65
78
91
104
77.7
80.4
67.9
57.5
58.4
49.8
| Day temperature | Night temperature |
Precipitation total, in.
June
July
August
0.0
0.2
0.5
0.7
1.0
1.2
1.5
1.7
0.5
0.4
1.5
Sunny, partly cloudy and cloudy days
June
July
August
0
5
10
15
20
25
30
35
3
6
6
8
10
22
23
14
| Cloudy days | Partly cloudy days | Sunny days |
Wind speed, mph
June
July
August
0.0
0.9
1.9
2.8
3.7
4.6
5.6
6.5
4.7
4.8
5.4
Average sunny hours
June
July
August
0
2
4
6
8
10
12
14
10.8
12.5
10.5
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
Best time for vacation in Helena
Helena on a weather map
Leaflet | Tiles © Esri
Places in USA:
Name
°F
24 Hours Forecast
Helena
Local time: 12:35
April 21, monday
1500
45°F
E
19 mph
19 mph
1800
41°F
E
19 mph
19 mph
2100
34°F
E
11 mph
11 mph
April 22, tuesday
0000
30°F
NE
6 mph
6 mph
0300
28°F
E
6 mph
6 mph
0600
28°F
E
6 mph
6 mph
0900
32°F
E
6 mph
6 mph
1200
41°F
E
9 mph
9 mph
