Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 31°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Sunday
23rd Aug
31

17

9

7
Monday
24th Aug
26

11

14

7
Tuesday
25th Aug
27

12

12

7
Wednesday
26th Aug
30

11

9

7
Thursday
27th Aug
30

13

11

7

5-day weather forecast updated at 04:00 on Sunday 23rd August 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 Sunday 23rd August 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 32 kph from the west.

31
°C maximum temperature
17
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
32
kph wind from W

Great Falls weather for Monday 24th August 2026

Expect clear skies in Great Falls, Montana with a maximum temperature of 26°C, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.

26
°C maximum temperature
11
°C minimum temperature
clear skies
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
17
kph wind from SW

Great Falls weather for Tuesday 25th August 2026

Expect clear skies in Great Falls, Montana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-east.

27
°C maximum temperature
12
°C minimum temperature
clear skies
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
20
kph wind from NE

Great Falls weather for Wednesday 26th August 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 30°C, low levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the east.

30
°C maximum temperature
11
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
16
kph wind from E

Great Falls weather for Thursday 27th August 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.