Helena weather live forecast

Today's maximum temperature in Helena is expected to be 23°C. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Wednesday
17th Sep
23

8

11

6
Thursday
18th Sep
25

8

12

6
Friday
19th Sep
26

8

7

6
Saturday
20th Sep
27

9

12

5
Sunday
21st Sep
22

10

9

5

5-day weather forecast updated at 04:01 on Wednesday 17th September 2025 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 17th September 2025

Expect clear skies in Helena, Montana with a maximum temperature of 23°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the east.

23
°C maximum temperature
8
°C minimum temperature
clear skies
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from E

Helena weather for Thursday 18th September 2025

Expect clear skies in Helena, Montana with a maximum temperature of 25°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

25
°C maximum temperature
8
°C minimum temperature
clear skies
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from E

Helena weather for Friday 19th September 2025

Expect scattered clouds in Helena, Montana with a maximum temperature of 26°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-west.

26
°C maximum temperature
8
°C minimum temperature
scattered clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
11
kph wind from SW

Helena weather for Saturday 20th September 2025

Expect clear skies in Helena, Montana with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

27
°C maximum temperature
9
°C minimum temperature
clear skies
12
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
17
kph wind from W

Helena weather for Sunday 21st September 2025

Expect scattered clouds in Helena, Montana with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the west.

22
°C maximum temperature
10
°C minimum temperature
scattered clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
26
kph wind from W

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Metric (°C / mm) | Imperial (°F / inches)

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Montana - quick facts
Flight time^✝	13 hours
Time difference	UK -7 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	Montana Office of Tourism