Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 82°F. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Monday
20th Jul
82

59

11

9
Tuesday
21st Jul
84

64

3

8
Wednesday
22nd Jul
90

63

9

9
Thursday
23rd Jul
91

68

13

9
Friday
24th Jul
95

64

9

9

5-day weather forecast updated at 04:00 on Monday 20th July 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 20th July 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north-east.

82
°F maximum temperature
59
°F minimum temperature
scattered clouds
11
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
mph wind from NE

Great Falls weather for Tuesday 21st July 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north-east.

84
°F maximum temperature
64
°F minimum temperature
broken clouds
3
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
11
mph wind from NE

Great Falls weather for Wednesday 22nd July 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the east.

90
°F maximum temperature
63
°F minimum temperature
broken clouds
9
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
8
mph wind from E

Great Falls weather for Thursday 23rd July 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 91°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south.

91
°F maximum temperature
68
°F minimum temperature
scattered clouds
13
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
9
mph wind from S

Great Falls weather for Friday 24th July 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 95°F, high levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 14 mph from the south-west.