Great Falls weather live forecast

Today's maximum temperature in Great Falls is expected to be 5°C. Select a day from the live weather forecast for Great Falls, Montana, USA for more weather parameters.

Tuesday
20th Jan
5

-2

4

0
Wednesday
21st Jan
-2

-7

2

1
Thursday
22nd Jan
-1

-10

8

1

5-day weather forecast updated at 04:01 on Saturday 17th January 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

Travelsphere: up to £800 off worldwide holidays

Sale

Save up to £800 per couple on selected worldwide tours
Plus save up to £300 per couple on European tours
Book tours online in Travelsphere New Year sale

Go to Travelsphere deal >>

Expires at 23:59 on Saturday 28th Feb 2026 · View all Travelsphere 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 20th January 2026

Expect clear skies with flurries of snow in Great Falls, Montana with a maximum temperature of 5°C and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 44% chance of some snow and a moderate breeze of 27 kph from the north-west.

5
°C maximum temperature
-2
°C minimum temperature
clear skies with flurries of snow
4
hours of sunshine
0
UV index (None)
44
% chance of some snow
<2
cm of snow expected
0
°C wind chill
27
kph wind from NW

Great Falls weather for Wednesday 21st January 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of -2°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 21 kph from the north-west.

-2
°C maximum temperature
-7
°C minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-8
°C wind chill
21
kph wind from NW

Great Falls weather for Thursday 22nd January 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of -1°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 18 kph from the south-west.