Helena weather live forecast

Today's maximum temperature in Helena is expected to be 82°F. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Monday
17th Aug
82

55

9

6
Tuesday
18th Aug
82

61

3

5
Wednesday
19th Aug
84

54

13

7
Thursday
20th Aug
86

55

8

8
Friday
21st Aug
86

59

13

7

5-day weather forecast updated at 04:00 on Tuesday 18th 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 17th August 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the west.

82
°F maximum temperature
55
°F minimum temperature
broken clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
7
mph wind from W

Helena weather for Tuesday 18th August 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the west.

82
°F maximum temperature
61
°F minimum temperature
broken clouds
3
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
9
mph wind from W

Helena weather for Wednesday 19th August 2026

Expect scattered clouds in Helena, Montana with a maximum temperature of 84°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 west.

84
°F maximum temperature
54
°F minimum temperature
scattered clouds
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
9
mph wind from W

Helena weather for Thursday 20th August 2026

Expect scattered clouds in Helena, Montana with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north-west.

86
°F maximum temperature
55
°F minimum temperature
scattered clouds
8
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 Friday 21st August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the west.