Helena weather live forecast

Today's maximum temperature in Helena is expected to be 14°C. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Wednesday
20th May
14

5

1

UV3
Thursday
21st May
16

4

8

UV4
Friday
22nd May
20

4

9

UV7
Saturday
23rd May
24

6

9

UV5
Sunday
24th May
26

8

14

UV6

5-day weather forecast updated at 04:00 on Wednesday 20th 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 Wednesday 20th May 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 74% chance of some rain and a moderate breeze of 20 kph from the north-west.

14
°C maximum temperature
5
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
UV3
UV index (Moderate)
74
% chance of some rain
<5
mm of rainfall expected
14
°C wind chill
20
kph wind from NW

Helena weather for Thursday 21st May 2026

Expect sunshine and showers in Helena, Montana with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a gentle breeze of 14 kph from the north.

16
°C maximum temperature
4
°C minimum temperature
sunshine and showers
8
hours of sunshine
UV4
UV index (Moderate)
13
% chance of some rain
<2
mm of rainfall expected
16
°C wind chill
14
kph wind from N

Helena weather for Friday 22nd May 2026

Expect scattered clouds in Helena, Montana with a maximum temperature of 20°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-west.

20
°C maximum temperature
4
°C minimum temperature
scattered clouds
9
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from NW

Helena weather for Saturday 23rd May 2026

Expect scattered clouds in Helena, Montana with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the west.

24
°C maximum temperature
6
°C minimum temperature
scattered clouds
9
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
24
°C wind chill
18
kph wind from W

Helena weather for Sunday 24th May 2026

Expect scattered clouds in Helena, Montana with a maximum temperature of 26°C, maximum UV of 6 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.