Helena (Montana) in august: average Weather, Temperature and Climate
Weather in Helena (Montana) in august 2025
The weather in Helena (Montana) in the month of august comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
good weather UV index: 6
Weather at 6am
50°F
Clear/Sunny
67% of time
20%
6%
5%
Weather at 12pm
74°F
Clear/Sunny
71% of time
17%
7%
4%
Weather at 6pm
79°F
Clear/Sunny
64% of time
23%
7%
5%
Weather at 3am
58°F
67%
16%
12%
3%
Evolution of daily average temperature and precipitation in Helena (Montana) in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Helena (Montana) in august.
The climate of Helena (Montana) in august is good
The weather in august in Helena (Montana) is quite dry (with 2in of rainfall over 3 days). The weather is worst than the previous month since in july there is an average of 1.6in of rainfall over 2 days.
The climate good in that locality august. Temperatures are up to 79°F. In the morning the temperature drops to 50°F. Thus, the mean temperature average in august in Helena (Montana) is 65°F. These temperatures are far removed from those records observed in Helena (Montana) in the month of august with a maximum record of 99°F in 2018 and a minimum record of 31°F in 2014. You You can hope to have about 6 days with temperatures up to 86°F, or 19 of the month.
In august in Helena (Montana), the days on average last 14:11. The sun rises at 05:27 and sunset is at 19:38.
With good weather conditions, this month is advisable to go in this city.
Seasonal average climate and temperature of Helena (Montana) in august
Check below seasonal norms These statistics are compiled from the weather statements of the past years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 65°F | ||||
| Highest temperature | 79°F | ||||
| Lowest temperature | 50°F | ||||
| Highest record temperature | 99°F (2018) | ||||
| Lowest record temperature | 31°F (2014) | ||||
| Number of days at +86°F | 6 day(s) (19%) | ||||
| Number of days at +65°F | 29 day(s) (94%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 13km/h | ||||
| Wind temperature | 49°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2in | ||||
| Number of days with rainfall | 3 day(s) (9%) | ||||
| Record daily rainfall | 1.7in (2014) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 67% | ||||
| Visibility | 9.73km | ||||
| Cloud cover | 15% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 14 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:27 | ||||
| Time of sunset | 19:38 | ||||
| Length of day | 14:11 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last august?
Here is the day by day recorded weather in Helena (Montana) in august 2024:
56°F to 92°F
61°F to 95°F
65°F to 95°F
65°F to 76°F
54°F to 88°F
54°F to 85°F
54°F to 61°F
49°F to 65°F
47°F to 72°F
50°F to 81°F
49°F to 79°F
54°F to 79°F
52°F to 77°F
49°F to 70°F
50°F to 77°F
50°F to 77°F
50°F to 83°F
56°F to 88°F
54°F to 81°F
52°F to 83°F
52°F to 76°F
52°F to 77°F
52°F to 85°F
50°F to 76°F
43°F to 68°F
47°F to 74°F
50°F to 83°F
38°F to 59°F
40°F to 72°F
47°F to 83°F
52°F to 85°F
Map: other cities in the United States (USA) in august
Cities near Helena (Montana):
| Montana in august | good weather |
| Yellowstone National Park in august | tolerable weather |
| Glacier National Park (Montana) in august | tolerable weather |
| Cody (Wyoming) in august | good weather |
| Grand Teton National Park (Wyoming) in august | tolerable weather |
| Jackson Hole in august | tolerable weather |
| Boise (Idaho) in august | perfect weather |
| Wyoming in august | perfect weather |
| Salt Lake City in august | perfect weather |
| Mount Rushmore in august | good weather |
| Mount Rainier National Park (Washington) in august | good weather |
| Seattle in august | perfect weather |
Click over cities on the map for information about the weather in august.
Helena (Montana)
perfect weather
good
tolerable
bad
very bad
Weather data for Helena (Montana) in august:
Weather data for Helena (Montana) for august are derived from an average of the weather forecast since 2009 in Helena (Montana). There is a margin of error and these forecasts are to be considered as general information only. The weather in Helena (Montana) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Helena (Montana).