Weather in Great Falls in September

The weather in Great Falls in September is cold, when degrees are between 6 and 24 and there are 9 days of rain and 1 days of snow in average. Therefore, if you are planning a trip to Great Falls in September, warm clothes and gloves are highly recommended.
Avg Temp
6° - 24°
Avg Rainy Days
9
Avg Dry Days
21
Avg Snow Days
1
Full weather report for today ››

Weather forecast for the next 14 days ››

Weather Facts - Great Falls in September

* The warmest temperature recorded in in September is 37°C
* The coldest temperature recorded in Great Falls in September is (-9°C)
* The average rainfall in Great Falls in September is 32 mm

Yearly Average for Great Falls

Max Temp
Min Temp
Rainy Days
Jan.
3°
(-10°)
9
Feb.
5°
(-9°)
7
March
9°
(-5°)
10
April
14°
(-1°)
14
May
19°
4°
16
June
24°
7°
16
July
30°
11°
11
August
29°
10°
12
Sep.
24°
6°
9
Oct.
16°
1°
9
Nov.
8°
(-4°)
8
Dec.
3°
(-8°)
8

Average Temperature in Great Falls