Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 13°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Monday
4th May
13

5

4

4
Tuesday
5th May
10

2

5

5
Wednesday
6th May
20

-2

10

6
Thursday
7th May
20

8

2

5
Friday
8th May
22

6

2

5

5-day weather forecast updated at 04:00 on Monday 4th May 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 4th May 2026

Expect mostly cloudy with light rain in Great Falls, Montana with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 20% chance of some rain and a moderate breeze of 23 kph from the north.

13
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
4
UV index (Moderate)
20
% chance of some rain
<2
mm of rainfall expected
13
°C wind chill
23
kph wind from N

Great Falls weather for Tuesday 5th May 2026

Expect mostly cloudy with light rain in Great Falls, Montana with a maximum temperature of 10°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and a moderate breeze of 24 kph from the north.

10
°C maximum temperature
2
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
11
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
24
kph wind from N

Great Falls weather for Wednesday 6th May 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 20°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

20
°C maximum temperature
-2
°C minimum temperature
scattered clouds
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

Great Falls weather for Thursday 7th May 2026

Expect mostly cloudy with light rain in Great Falls, Montana with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 22 kph from the south-west.

20
°C maximum temperature
8
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
5
UV index (Moderate)
51
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

Great Falls weather for Friday 8th May 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the west.