Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 26°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Sunday
10th May
26

6

7

7
Monday
11th May
24

10

12

7
Tuesday
12th May
26

6

12

7
Wednesday
13th May
30

10

10

6
Thursday
14th May
20

10

9

7

5-day weather forecast updated at 04:00 on Sunday 10th 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 Sunday 10th May 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 26°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the south-west.

26
°C maximum temperature
6
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
26
°C wind chill
24
kph wind from SW

Great Falls weather for Monday 11th May 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 24°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the west.

24
°C maximum temperature
10
°C minimum temperature
scattered clouds
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
26
kph wind from W

Great Falls weather for Tuesday 12th May 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 26°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the east.

26
°C maximum temperature
6
°C minimum temperature
scattered clouds
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
26
°C wind chill
15
kph wind from E

Great Falls weather for Wednesday 13th May 2026

Expect sunshine and showers in Great Falls, Montana with a maximum temperature of 30°C, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a moderate breeze of 24 kph from the south-west.

30
°C maximum temperature
10
°C minimum temperature
sunshine and showers
10
hours of sunshine
6
UV index (High)
27
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
24
kph wind from SW

Great Falls weather for Thursday 14th May 2026

Expect sunshine and showers in Great Falls, Montana with a maximum temperature of 20°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 28% chance of some rain and a fresh breeze of 31 kph from the west.