The long-range forecast for Great Falls predicts a cold wave, with temperatures dropping to 1°, significantly lower than typical for Great Falls and -3.1 °C below the historical average.
Select a month and click on a day for more information:
Thursday
Oct 1
16° / 6°
Friday
Oct 2
19° / 6°
Saturday
Oct 3
16° / 6°
Sunday
Oct 4
20° / 4°
Monday
Oct 5
18° / 5°
Tuesday
Oct 6
20° / 4°
Wednesday
Oct 7
22° / 4°
Thursday
Oct 8
25° / 4°
Friday
Oct 9
24° / 6°
Saturday
Oct 10
19° / 5°
Sunday
Oct 11
13° / 5°
Monday
Oct 12
10° / 2°
Tuesday
Oct 13
8° / -3°
Wednesday
Oct 14
13° / 2°
Thursday
Oct 15
11° / 3°
Friday
Oct 16
21° / 5°
Saturday
Oct 17
22° / 8°
Sunday
Oct 18
15° / 4°
Monday
Oct 19
14° / 5°
Tuesday
Oct 20
11° / 4°
Wednesday
Oct 21
9° / 1°
Thursday
Oct 22
20° / 3°
Friday
Oct 23
9° / 3°
Saturday
Oct 24
9° / 2°
Sunday
Oct 25
1° / -3°
Monday
Oct 26
-3° / -9°
Tuesday
Oct 27
8° / -4°
Wednesday
Oct 28
8° / -5°
Thursday
Oct 29
9° / -6°
Friday
Oct 30
8° / -5°
Saturday
Oct 31
12° / -3°
Great Falls 30 days weather forecast
Check out our estimated 30 days weather forecast for Great Falls, this data is based on the average weather in Great Falls in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Great Falls next to the desired date.