The long-range forecast for Helena predicts a heatwave, with temperatures reaching up to 36°, significantly higher than typical for Helena for this time of the year and 4.5 °C above the historical average.
Select a month and click on a day for more information:
Saturday
Aug 1
33° / 14°
Sunday
Aug 2
29° / 15°
Monday
Aug 3
29° / 12°
Tuesday
Aug 4
26° / 9°
Wednesday
Aug 5
31° / 8°
Thursday
Aug 6
33° / 11°
Friday
Aug 7
36° / 12°
Saturday
Aug 8
36° / 13°
Sunday
Aug 9
33° / 12°
Monday
Aug 10
29° / 10°
Tuesday
Aug 11
30° / 9°
Wednesday
Aug 12
32° / 11°
Thursday
Aug 13
29° / 11°
Friday
Aug 14
26° / 8°
Saturday
Aug 15
30° / 7°
Sunday
Aug 16
35° / 10°
Monday
Aug 17
36° / 14°
Tuesday
Aug 18
31° / 12°
Wednesday
Aug 19
29° / 11°
Thursday
Aug 20
27° / 11°
Friday
Aug 21
26° / 11°
Saturday
Aug 22
27° / 10°
Sunday
Aug 23
28° / 10°
Monday
Aug 24
27° / 10°
Tuesday
Aug 25
25° / 9°
Wednesday
Aug 26
27° / 11°
Thursday
Aug 27
28° / 13°
Friday
Aug 28
21° / 10°
Saturday
Aug 29
27° / 9°
Sunday
Aug 30
26° / 10°
Monday
Aug 31
28° / 11°
Helena 30 days weather forecast
Check out our estimated 30 days weather forecast for Helena, this data is based on the average weather in Helena in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Helena next to the desired date.