Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 22°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Monday
28th Sep
22

8

10

4
Tuesday
29th Sep
21

8

9

5
Wednesday
30th Sep
16

5

2

4
Thursday
1st Oct
19

4

11

4
Friday
2nd Oct
23

6

4

4

5-day weather forecast updated at 04:00 on Monday 28th September 2026 GMT

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The 5-day weather forecast for Montana (Great Falls) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Great Falls weather forecast by day

Below are the detailed weather forecasts for Great Falls for the next 5 days.

Great Falls weather for Monday 28th September 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the west.

22
°C maximum temperature
8
°C minimum temperature
scattered clouds
10
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
19
kph wind from W

Great Falls weather for Tuesday 29th September 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 33 kph from the south-west.

21
°C maximum temperature
8
°C minimum temperature
scattered clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
21
°C wind chill
33
kph wind from SW

Great Falls weather for Wednesday 30th September 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the south-west.

16
°C maximum temperature
5
°C minimum temperature
broken clouds
2
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
kph wind from SW

Great Falls weather for Thursday 1st October 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.

19
°C maximum temperature
4
°C minimum temperature
scattered clouds
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
13
kph wind from S

Great Falls weather for Friday 2nd October 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.