Helena weather live forecast

Today's maximum temperature in Helena is expected to be 90°F. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Monday
10th Aug
90

57

14

7
Tuesday
11th Aug
88

55

14

8
Wednesday
12th Aug
81

55

12

7
Thursday
13th Aug
70

57

5

6
Friday
14th Aug
68

57

7

5

5-day weather forecast updated at 04:00 on Monday 10th 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 Monday 10th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north-west.

90
°F maximum temperature
57
°F minimum temperature
clear skies
14
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
11
mph wind from NW

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 light breeze of 7 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
7
mph wind from NW

Helena weather for Wednesday 12th August 2026

Expect scattered clouds in Helena, Montana with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the north.

81
°F maximum temperature
55
°F minimum temperature
scattered clouds
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
11
mph wind from N

Helena weather for Thursday 13th August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 70°F, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 10 mph from the north.

70
°F maximum temperature
57
°F minimum temperature
isolated thunderstorms
5
hours of sunshine
6
UV index (High)
54
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
10
mph wind from N

Helena weather for Friday 14th August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 68°F, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 26% chance of some rain and a light breeze of 7 mph from the north.