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.

Friday
28th Aug
82

59

4

5
Saturday
29th Aug
75

59

2

5
Sunday
30th Aug
64

50

6

6
Monday
31st Aug
77

43

13

6
Tuesday
1st Sep
82

52

8

6

5-day weather forecast updated at 04:00 on Friday 28th 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 Friday 28th 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 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south.

82
°F maximum temperature
59
°F minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
9
mph wind from S

Helena weather for Saturday 29th August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 75°F, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 73% chance of some rain and a light breeze of 7 mph from the south-east.

75
°F maximum temperature
59
°F minimum temperature
isolated thunderstorms
2
hours of sunshine
5
UV index (Moderate)
73
% chance of some rain
<10
mm of rainfall expected
75
°F wind chill
7
mph wind from SE

Helena weather for Sunday 30th August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 64°F, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 35% chance of some rain and a moderate breeze of 16 mph from the west.

64
°F maximum temperature
50
°F minimum temperature
isolated thunderstorms
6
hours of sunshine
6
UV index (High)
35
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
16
mph wind from W

Helena weather for Monday 31st August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 77°F, maximum UV of 6 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the south-west.

77
°F maximum temperature
43
°F minimum temperature
clear skies
13
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
7
mph wind from SW

Helena weather for Tuesday 1st September 2026

Expect sunshine and showers in Helena, Montana with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 8 mph from the south-west.