Helena weather live forecast

Today's maximum temperature in Helena is expected to be 88°F. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Tuesday
11th Aug
88

55

14

8
Wednesday
12th Aug
79

55

10

7
Thursday
13th Aug
72

55

2

6
Friday
14th Aug
72

57

5

3
Saturday
15th Aug
77

55

10

6

5-day weather forecast updated at 04:00 on Tuesday 11th August 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 Tuesday 11th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the north-west.

88
°F maximum temperature
55
°F minimum temperature
clear skies
14
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
8
mph wind from NW

Helena weather for Wednesday 12th August 2026

Expect sunshine and showers in Helena, Montana with a maximum temperature of 79°F, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a gentle breeze of 12 mph from the north.

79
°F maximum temperature
55
°F minimum temperature
sunshine and showers
10
hours of sunshine
7
UV index (High)
30
% chance of some rain
<2
mm of rainfall expected
79
°F wind chill
12
mph wind from N

Helena weather for Thursday 13th August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 72°F, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 9 mph from the north.

72
°F maximum temperature
55
°F minimum temperature
isolated thunderstorms
2
hours of sunshine
6
UV index (High)
78
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
9
mph wind from N

Helena weather for Friday 14th August 2026

Expect mostly cloudy with light rain in Helena, Montana with a maximum temperature of 72°F, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 47% chance of some rain and a light breeze of 6 mph from the north.

72
°F maximum temperature
57
°F minimum temperature
mostly cloudy with light rain
5
hours of sunshine
3
UV index (Moderate)
47
% chance of some rain
<5
mm of rainfall expected
72
°F wind chill
6
mph wind from N

Helena weather for Saturday 15th August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 77°F, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a light breeze of 7 mph from the east.