The long-range forecast for Great Falls predicts a cold wave, with temperatures dropping to 3°, significantly lower than typical for Great Falls and -3.5 °F 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
14° / 2°
Thursday
Oct 15
12° / 3°
Friday
Oct 16
21° / 5°
Saturday
Oct 17
22° / 8°
Sunday
Oct 18
14° / 5°
Monday
Oct 19
21° / 7°
Tuesday
Oct 20
13° / 6°
Wednesday
Oct 21
6° / -1°
Thursday
Oct 22
6° / -2°
Friday
Oct 23
4° / -2°
Saturday
Oct 24
3° / -1°
Sunday
Oct 25
7° / -1°
Monday
Oct 26
7° / 1°
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.
Weather in Great Falls for the next 30 days
October
Click on a day for an hourly weather forecast
Great Falls long range weather forecast - FAQ
Do you provide 30 days weather forecast for Great Falls?
You can see the next 30 weather forecast for Great Falls at the top of the page, the next 14 days (from today) are more accurate, while the other is based on average of previous years.
Can I see the weather forecast for a particular date in Great Falls?
Sure, you can select the date from the calendar above to view the forecast in Great Falls on that date.
How accurate is the long-range weather forecast for Great Falls?
Our long-range weather forecast for Great Falls is provided by using statistics from previous years. Although we cannot predict the weather months in advance, we can see an average.
Can I see a long-range weather forecast for different countries?
Yes, we provide a 14 day weather forecast and a long-range weather forecast for different countries and cities. You can search for a location in the search box at the top of the page.
More about the weather in Great Falls