Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 55°F. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Tuesday
17th Mar
55

45

1

3
Wednesday
18th Mar
61

45

1

3
Thursday
19th Mar
66

46

7

4
Friday
20th Mar
64

48

8

4
Saturday
21st Mar
55

36

2

3

5-day weather forecast updated at 04:00 on Tuesday 17th March 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 Tuesday 17th March 2026

Expect mostly cloudy with light rain in Great Falls, Montana with a maximum temperature of 55°F, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 4% chance of some rain and a strong breeze of 26 mph from the south-west.

55
°F maximum temperature
45
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
3
UV index (Moderate)
4
% chance of some rain
<2
mm of rainfall expected
55
°F wind chill
26
mph wind from SW

Great Falls weather for Wednesday 18th March 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 61°F, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 24 mph from the south-west.

61
°F maximum temperature
45
°F minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
61
°F wind chill
24
mph wind from SW

Great Falls weather for Thursday 19th March 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 66°F, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 26 mph from the south-west.

66
°F maximum temperature
46
°F minimum temperature
broken clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
66
°F wind chill
26
mph wind from SW

Great Falls weather for Friday 20th March 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 64°F, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 25 mph from the south-west.

64
°F maximum temperature
48
°F minimum temperature
scattered clouds
8
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
25
mph wind from SW

Great Falls weather for Saturday 21st March 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 55°F, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 18 mph from the north-west.