Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 52°F. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Tuesday
16th Dec
52

43

4

1
Wednesday
17th Dec
48

28

2

1
Thursday
18th Dec
45

28

1

0
Friday
19th Dec
48

25

6

1
Saturday
20th Dec
39

27

9

1

5-day weather forecast updated at 04:01 on Tuesday 16th December 2025 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 Tuesday 16th December 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 52°F, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate gale of 32 mph from the south-west.

52
°F maximum temperature
43
°F minimum temperature
scattered clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
32
mph wind from SW

Great Falls weather for Wednesday 17th December 2025

Expect mostly cloudy with light rain in Great Falls, Montana with a maximum temperature of 48°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and a fresh gale of 39 mph from the west.

48
°F maximum temperature
28
°F minimum temperature
mostly cloudy with light rain
2
hours of sunshine
1
UV index (Low)
41
% chance of some rain
<2
mm of rainfall expected
39
°F wind chill
39
mph wind from W

Great Falls weather for Thursday 18th December 2025

Expect broken clouds in Great Falls, Montana with a maximum temperature of 45°F and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 27 mph from the south-west.

45
°F maximum temperature
28
°F minimum temperature
broken clouds
1
hour of sunshine
0
UV index (None)
0
mm of rainfall expected
36
°F wind chill
27
mph wind from SW

Great Falls weather for Friday 19th December 2025

Expect cloudy with sleet or snow in Great Falls, Montana with a maximum temperature of 48°F, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 2-5 mm of sleet/snow expected with 29% chance of some sleet or snow and a strong breeze of 29 mph from the west.

48
°F maximum temperature
25
°F minimum temperature
cloudy with sleet or snow
6
hours of sunshine
1
UV index (Low)
29
% chance of some sleet or snow
<5
mm of sleet/snow expected
39
°F wind chill
29
mph wind from W

Great Falls weather for Saturday 20th December 2025

Expect clear skies with flurries of snow in Great Falls, Montana with a maximum temperature of 39°F, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0-2 cm of snow expected with 8% chance of some snow and a fresh breeze of 20 mph from the south-west.