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.

Thursday
6th Aug
90

54

15

8
Friday
7th Aug
93

55

15

8
Saturday
8th Aug
95

57

14

8
Sunday
9th Aug
91

59

14

7
Monday
10th Aug
86

55

13

7

5-day weather forecast updated at 04:00 on Wednesday 5th 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 Thursday 6th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the north-west.

90
°F maximum temperature
54
°F minimum temperature
clear skies
15
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 Friday 7th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 93°F, high levels of heat & humidity, maximum UV of 8 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 12 mph from the north-west.

93
°F maximum temperature
55
°F minimum temperature
clear skies
15
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
12
mph wind from NW

Helena weather for Saturday 8th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 95°F, high 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 11 mph from the north-west.

95
°F maximum temperature
57
°F minimum temperature
clear skies
14
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
11
mph wind from NW

Helena weather for Sunday 9th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 91°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.

91
°F maximum temperature
59
°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 Monday 10th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 86°F, low levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north.