Montana weather live forecast

Today's maximum temperature in Montana is expected to be 24°C. Select a day from the live weather forecast for Montana (Helena), USA for more weather parameters.

Friday
18th Sep
24

12

3

4
Saturday
19th Sep
18

13

0

3
Sunday
20th Sep
24

10

11

4
Monday
21st Sep
25

9

11

4
Tuesday
22nd Sep
25

10

10

5

5-day weather forecast updated at 04:00 on Friday 18th September 2026 GMT

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The 5-day weather forecast for Montana (Helena) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Top Montana destinations

Below are temperatures expected today at popular countries, regions and places in Montana. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

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Montana weather forecast by day

Below are the detailed weather forecasts for Montana for the next 5 days. The forecasts shown are for Helena and may not represent the whole of Montana. Browse more destinations in Montana to view more weather forecasts.

Montana weather for Friday 18th September 2026

Expect isolated thunderstorms in Montana with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 13 kph from the north-west.

24
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
54
% chance of some rain
<5
mm of rainfall expected
24
°C wind chill
13
kph wind from NW

Montana weather for Saturday 19th September 2026

Expect isolated thunderstorms in Montana with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 80% chance of some rain and a light breeze of 11 kph from the north-west.

18
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
3
UV index (Moderate)
80
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
11
kph wind from NW

Montana weather for Sunday 20th September 2026

Expect scattered clouds in Montana with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-west.

24
°C maximum temperature
10
°C minimum temperature
scattered clouds
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
24
°C wind chill
7
kph wind from SW

Montana weather for Monday 21st September 2026

Expect clear skies in Montana with a maximum temperature of 25°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

25
°C maximum temperature
9
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from SW

Montana weather for Tuesday 22nd September 2026

Expect scattered clouds in Montana with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.