The long-range forecast for Helena predicts a cold wave, with temperatures dropping to 5°, significantly lower than typical for Helena and -3.7 °C below the historical average.
Select a month and click on a day for more information:
Thursday
Oct 1
17° / 2°
Friday
Oct 2
16° / 5°
Saturday
Oct 3
13° / 4°
Sunday
Oct 4
19° / 4°
Monday
Oct 5
13° / 2°
Tuesday
Oct 6
18° / 1°
Wednesday
Oct 7
21° / 3°
Thursday
Oct 8
22° / 4°
Friday
Oct 9
22° / 5°
Saturday
Oct 10
18° / 5°
Sunday
Oct 11
15° / 4°
Monday
Oct 12
12° / 1°
Tuesday
Oct 13
13° / 1°
Wednesday
Oct 14
16° / 2°
Thursday
Oct 15
13° / 4°
Friday
Oct 16
17° / 2°
Saturday
Oct 17
13° / 1°
Sunday
Oct 18
14° / 0°
Monday
Oct 19
17° / 3°
Tuesday
Oct 20
17° / 3°
Wednesday
Oct 21
16° / 3°
Thursday
Oct 22
12° / 1°
Friday
Oct 23
10° / -1°
Saturday
Oct 24
9° / -4°
Sunday
Oct 25
6° / -3°
Monday
Oct 26
6° / -6°
Tuesday
Oct 27
6° / -6°
Wednesday
Oct 28
6° / -8°
Thursday
Oct 29
7° / -8°
Friday
Oct 30
7° / -7°
Saturday
Oct 31
11° / -6°
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.