Helena weather live forecast

Today's maximum temperature in Helena is expected to be 55°F. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Monday
18th May
55

32

8

6
Tuesday
19th May
63

36

5

6
Wednesday
20th May
61

43

1

4
Thursday
21st May
63

37

5

5
Friday
22nd May
68

43

14

7

5-day weather forecast updated at 04:00 on Monday 18th May 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 18th May 2026

Expect sunshine and showers in Helena, Montana with a maximum temperature of 55°F, 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 north.

55
°F maximum temperature
32
°F minimum temperature
sunshine and showers
8
hours of sunshine
6
UV index (High)
25
% chance of some rain
<2
mm of rainfall expected
55
°F wind chill
8
mph wind from N

Helena weather for Tuesday 19th May 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 63°F, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the west.

63
°F maximum temperature
36
°F minimum temperature
broken clouds
5
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
mph wind from W

Helena weather for Wednesday 20th May 2026

Expect mostly cloudy with light rain in Helena, Montana with a maximum temperature of 61°F, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 53% chance of some rain and a gentle breeze of 11 mph from the north-west.

61
°F maximum temperature
43
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
4
UV index (Moderate)
53
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
11
mph wind from NW

Helena weather for Thursday 21st May 2026

Expect mostly cloudy with light rain in Helena, Montana with a maximum temperature of 63°F, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 14% chance of some rain and a gentle breeze of 9 mph from the north-west.

63
°F maximum temperature
37
°F minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
14
% chance of some rain
<2
mm of rainfall expected
63
°F wind chill
9
mph wind from NW

Helena weather for Friday 22nd May 2026

Expect clear skies in Helena, Montana with a maximum temperature of 68°F, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the south-west.