Helena weather live forecast

Today's maximum temperature in Helena is expected to be 79°F. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Wednesday
2nd Sep
79

54

7

5
Thursday
3rd Sep
75

50

4

6
Friday
4th Sep
75

50

2

6
Saturday
5th Sep
73

50

8

6
Sunday
6th Sep
75

50

4

6

5-day weather forecast updated at 04:00 on Wednesday 2nd 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.

Helena weather forecast by day

Below are the detailed weather forecasts for Helena for the next 5 days.

Helena weather for Wednesday 2nd September 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 79°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 17 mph from the south-west.

79
°F maximum temperature
54
°F minimum temperature
isolated thunderstorms
7
hours of sunshine
5
UV index (Moderate)
58
% chance of some rain
<2
mm of rainfall expected
79
°F wind chill
17
mph wind from SW

Helena weather for Thursday 3rd September 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 75°F, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the south-west.

75
°F maximum temperature
50
°F minimum temperature
broken clouds
4
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
75
°F wind chill
12
mph wind from SW

Helena weather for Friday 4th September 2026

Expect mostly cloudy with light rain in Helena, Montana with a maximum temperature of 75°F, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 32% chance of some rain and a light breeze of 7 mph from the west.

75
°F maximum temperature
50
°F minimum temperature
mostly cloudy with light rain
2
hours of sunshine
6
UV index (High)
32
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
7
mph wind from W

Helena weather for Saturday 5th September 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 73°F, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 22% chance of some rain and a gentle breeze of 10 mph from the north.

73
°F maximum temperature
50
°F minimum temperature
isolated thunderstorms
8
hours of sunshine
6
UV index (High)
22
% chance of some rain
<2
mm of rainfall expected
73
°F wind chill
10
mph wind from N

Helena weather for Sunday 6th September 2026

Expect mostly cloudy with light rain in Helena, Montana with a maximum temperature of 75°F, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a gentle breeze of 10 mph from the north.