World Resorts USA Helena Weather

Helena weather in August

Weather in Helena: August

Average day temperature: 77.7°F
Average night temperature: 57.5°F
Number of sunny days: 22 days
Day length: 13.4 - 14.8 hours
Number of rainy days: 1 day
Precipitation totals: 0.5 in.

Air temperature in August, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
15
30
45
60
75
90
105
120
Day temperature   
Night temperature

The highest day temperature during August of 2024 was 91°F. At the same time the lowest night temperature was 42°F. Daily and nightly averages during August were 72.2°F and 52.6°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
71%
19%
10%

Mostly all days in August are sunny but cloudy days are also possible.

Precipitation total in August, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.2
0.5
0.7
1.0
1.2
1.5
1.7
1.5
1.4
1.5
1.4

Precipitation total value in Helena in August is 0.5 in. Other months of the year show relatively similar values.

Wind speed in August, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.1
2.1
3.2
4.2
5.3
6.3
7.4
4.5
4.8
4.9
4.8
4.8
5.4
5.8
6.2
5.6
5.0
4.0
4.5
4.8
4.9
4.8
4.7
4.8
5.4
5.8
6.2
5.6
5.0
4.0

The average wind speed value in August is 4.7 mph It makes August one of the least windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.1
4.3
6.4
8.6
10.7
12.8
15.0
4.4
5.1
7.1
9.0
12.5
10.5
8.3
7.3
6.3
4.9
4.5
4.4
5.1
7.1
9.0
10.8
12.5
10.5
8.3
7.3
6.3
4.9
4.5

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 10.8.

Best time for vacation in Helena

Sunniest months:
July 23 days
August 22 days
September 20 days
Warmest months:
July 80.4 °F
August 77.7 °F
September 69.4 °F
Coldest months:
February 25.6 °F
January 25.6 °F
December 29.4 °F
Rainiest months:
June 3 days
May 3 days
July 1 day
Windiest months:
April 6.2 mph
May 5.8 mph
March 5.6 mph

Helena on a weather map

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24 Hours Forecast
Helena
Local time: 03:17
April 16, wednesday
0600
37°F
SE
4 mph
0900
43°F
S
3 mph
1200
48°F
E
4 mph
1500
36°F
S
11 mph
1800
30°F
S
9 mph
2100
27°F
S
13 mph
April 17, thursday
0000
25°F
S
11 mph
0300
23°F
S
7 mph
Units of measurement: °C / °F