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.

Tuesday
17th Mar
13

7

1

3
Wednesday
18th Mar
16

7

1

3
Thursday
19th Mar
19

8

7

4
Friday
20th Mar
18

9

8

4
Saturday
21st Mar
13

2

2

3

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

More about Great Falls

Great Falls by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

Crystal Ski: Top ski deals to USA

Sale

Save on skiing holidays to the USA in winter 2025/2026
Book early with Crystal Ski for the best deals
Filter by promotional offers, duration, board basis & more

Go to Crystal Ski deal >>

View all Crystal Ski offers

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 13°C, 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 42 kph from the south-west.

13
°C maximum temperature
7
°C 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
13
°C wind chill
42
kph wind from SW

Great Falls weather for Wednesday 18th March 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 38 kph from the south-west.

16
°C maximum temperature
7
°C minimum temperature
broken clouds
1
hour of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
16
°C wind chill
38
kph wind from SW

Great Falls weather for Thursday 19th March 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 42 kph from the south-west.

19
°C maximum temperature
8
°C minimum temperature
broken clouds
7
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
42
kph wind from SW

Great Falls weather for Friday 20th March 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 41 kph from the south-west.

18
°C maximum temperature
9
°C minimum temperature
scattered clouds
8
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
41
kph wind from SW

Great Falls weather for Saturday 21st March 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 29 kph from the north-west.