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.

Tuesday
21st Apr
26

6

9

6
Wednesday
22nd Apr
20

5

11

5
Thursday
23rd Apr
4

-1

1

3
Friday
24th Apr
3

-3

2

4
Saturday
25th Apr
3

-5

4

6

5-day weather forecast updated at 04:00 on Tuesday 21st April 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 Tuesday 21st April 2026

Expect scattered clouds in Great Falls, Montana with a maximum temperature of 26°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-west.

26
°C maximum temperature
6
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
26
°C wind chill
20
kph wind from SW

Great Falls weather for Wednesday 22nd April 2026

Expect isolated thunderstorms in Great Falls, Montana with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 5-10 mm of rainfall expected with 85% chance of some rain and a fresh breeze of 35 kph from the south-west.

20
°C maximum temperature
5
°C minimum temperature
isolated thunderstorms
11
hours of sunshine
5
UV index (Moderate)
85
% chance of some rain
<10
mm of rainfall expected
20
°C wind chill
35
kph wind from SW

Great Falls weather for Thursday 23rd April 2026

Expect cloudy with sleet or snow in Great Falls, Montana with a maximum temperature of 4°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 79% chance of some sleet or snow and a fresh breeze of 34 kph from the north-west.

4
°C maximum temperature
-1
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
3
UV index (Moderate)
79
% chance of some sleet or snow
<10
mm of sleet/snow expected
-1
°C wind chill
34
kph wind from NW

Great Falls weather for Friday 24th April 2026

Expect mostly cloudy with light snow in Great Falls, Montana with a maximum temperature of 3°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 32% chance of some snow and a fresh breeze of 33 kph from the north-west.

3
°C maximum temperature
-3
°C minimum temperature
mostly cloudy with light snow
2
hours of sunshine
4
UV index (Moderate)
32
% chance of some snow
<2
cm of snow expected
-3
°C wind chill
33
kph wind from NW

Great Falls weather for Saturday 25th April 2026

Expect broken clouds in Great Falls, Montana with a maximum temperature of 3°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north-west.