Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 10°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Monday
15th Dec
10

7

2

1
Tuesday
16th Dec
8

5

4

1
Wednesday
17th Dec
7

-5

4

1
Thursday
18th Dec
6

-4

4

1
Friday
19th Dec
8

-1

2

0

5-day weather forecast updated at 04:01 on Monday 15th 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 Monday 15th December 2025

Expect broken clouds in Great Falls, Montana with a maximum temperature of 10°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 49 kph from the south-west.

10
°C maximum temperature
7
°C minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
49
kph wind from SW

Great Falls weather for Tuesday 16th December 2025

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 8°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate gale of 54 kph from the south-west.

8
°C maximum temperature
5
°C minimum temperature
scattered clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
54
kph wind from SW

Great Falls weather for Wednesday 17th December 2025

Expect sunshine and showers in Great Falls, Montana with a maximum temperature of 7°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a fresh gale of 63 kph from the west.

7
°C maximum temperature
-5
°C minimum temperature
sunshine and showers
4
hours of sunshine
1
UV index (Low)
37
% chance of some rain
<2
mm of rainfall expected
1
°C wind chill
63
kph wind from W

Great Falls weather for Thursday 18th December 2025

Expect broken clouds in Great Falls, Montana with a maximum temperature of 6°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 36 kph from the south-west.

6
°C maximum temperature
-4
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
1
°C wind chill
36
kph 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 8°C and 2 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 38% chance of some sleet or snow and a strong breeze of 41 kph from the south-west.