Helena weather live forecast

Today's maximum temperature in Helena is expected to be 81°F. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Tuesday
26th May
81

55

4

6
Wednesday
27th May
77

57

3

7
Thursday
28th May
84

55

8

8
Friday
29th May
84

55

10

8
Saturday
30th May
68

55

8

7

5-day weather forecast updated at 04:00 on Tuesday 26th 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 Tuesday 26th May 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 13 mph from the south-east.

81
°F maximum temperature
55
°F minimum temperature
isolated thunderstorms
4
hours of sunshine
6
UV index (High)
58
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
13
mph wind from SE

Helena weather for Wednesday 27th May 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 77°F, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a gentle breeze of 9 mph from the north-east.

77
°F maximum temperature
57
°F minimum temperature
isolated thunderstorms
3
hours of sunshine
7
UV index (High)
43
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
9
mph wind from NE

Helena weather for Thursday 28th May 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 84°F, low 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 gentle breeze of 10 mph from the east.

84
°F maximum temperature
55
°F minimum temperature
broken clouds
8
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
10
mph wind from E

Helena weather for Friday 29th May 2026

Expect sunshine and showers in Helena, Montana with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 48% chance of some rain and a gentle breeze of 9 mph from the south-west.

84
°F maximum temperature
55
°F minimum temperature
sunshine and showers
10
hours of sunshine
8
UV index (Very High)
48
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
9
mph wind from SW

Helena weather for Saturday 30th May 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 68°F, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 11 mph from the west.