Overall on the next 14 days there will be 3 days with snow in Great Falls and a total of 13.6 cm of snow.
It will be snowy on the following days:
Great Falls weather in October 2026
Click on a day for an hourly weather forecast
Tuesday
Oct 13
0 mm
8° / -3°
Wednesday
Oct 14
0 mm
13° / 2°
Thursday
Oct 15
0 mm
11° / 3°
Friday
Oct 16
0 mm
21° / 5°
Saturday
Oct 17
0 mm
22° / 8°
Sunday
Oct 18
0 mm
15° / 4°
Monday
Oct 19
0 mm
14° / 5°
Tuesday
Oct 20
0 mm
11° / 4°
Wednesday
Oct 21
0 mm
9° / 1°
Thursday
Oct 22
0 mm
20° / 3°
Friday
Oct 23
0 mm
9° / 3°
Saturday
Oct 24
0.1 cm
9° / 2°
Sunday
Oct 25
10.8 cm
1° / -3°
Monday
Oct 26
2.7 cm
-3° / -9°
🌨️ Snowy days in Great Falls 2026 (October)
The average weather in Great Falls in October
The weather in Great Falls in October is very cold with temperatures between 3°C and 13°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Great Falls during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Great Falls during October. It’s important to get out your snow boots and warm mittens to stay warm while you explore Great Falls.
Our weather forecast can give you a great sense of what weather to expect in Great Falls in October 2026.
If you’re planning to visit Great Falls in the near future, we highly recommend that you review the 14 day weather forecast for Great Falls before you arrive.
Temperatures
13° / 3°
Rainy Days
3
Snowy Days
4
Dry Days
24
Rainfall
30
mm
Sun Hours
7.6
Hrs
Historic average weather for October
Click on a day for an hourly weather forecast
Explore the weather in Great Falls in other months
Great Falls annual weather
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -7° | 3 | 16 | 12 | 19 mm | Awful | Great Falls in January |
| February | 0° / -8° | 3 | 11 | 15 | 23 mm | Awful | Great Falls in February |
| March | 7° / -3° | 3 | 17 | 11 | 25 mm | Bad | Great Falls in March |
| April | 11° / 1° | 4 | 19 | 7 | 46 mm | Bad | Great Falls in April |
| May | 17° / 5° | 5 | 24 | 2 | 53 mm | Ok | Great Falls in May |
| June | 23° / 9° | 4 | 26 | 0 | 49 mm | Perfect | Great Falls in June |
| July | 29° / 14° | 1 | 30 | 0 | 16 mm | Good | Great Falls in July |
| August | 28° / 14° | 1 | 30 | 0 | 27 mm | Perfect | Great Falls in August |
| September | 23° / 10° | 2 | 28 | 1 | 20 mm | Perfect | Great Falls in September |
| October | 13° / 3° | 3 | 24 | 4 | 30 mm | Bad | Great Falls in October |
| November | 6° / -2° | 3 | 19 | 9 | 20 mm | Awful | Great Falls in November |
| December | -1° / -8° | 2 | 15 | 13 | 18 mm | Awful | Great Falls in December |
Temperatures in Great Falls in October
Rain in Great Falls in October
Weather in Great Falls in October - FAQ
What is the average temperature in Great Falls in October?
The average temperature in Great Falls in October is 3/13° C.
What is the chance of rain in Great Falls in October?
On average, there are 3 rainy days in Great Falls during October.
Weather wise, is October a good time to visit Great Falls?
The weather in Great Falls in October is bad.
Can it snow in Great Falls in October?
On average, there are 4 snowy days in Great Falls in October.
More about the weather in Great Falls