Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 28°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Monday
20th Jul
28

14

8

9
Tuesday
21st Jul
28

19

7

8
Wednesday
22nd Jul
31

18

12

8
Thursday
23rd Jul
34

19

13

8
Friday
24th Jul
35

19

10

8

5-day weather forecast updated at 04:00 on Tuesday 21st July 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

GO Airport Shuttle discount code: 5% off airport transfers

Discount Code

Save EXTRA 5% on airport transfers worldwide
Book private taxis & shuttle buses with discount code
Enter in coupon box on 'Reservations' page

Show discount code

******WEB

Redeem GO Airport Shuttle discount code >>

Expires at 23:59 on Thursday 31st Dec 2026

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 20th July 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-east.

28
°C maximum temperature
14
°C minimum temperature
broken clouds
8
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
19
kph wind from NE

Great Falls weather for Tuesday 21st July 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-east.

28
°C maximum temperature
19
°C minimum temperature
broken clouds
7
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
19
kph wind from NE

Great Falls weather for Wednesday 22nd July 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-east.

31
°C maximum temperature
18
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from NE

Great Falls weather for Thursday 23rd July 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

34
°C maximum temperature
19
°C minimum temperature
scattered clouds
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
15
kph wind from SW

Great Falls weather for Friday 24th July 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the west.