Helena weather live forecast

Today's maximum temperature in Helena is expected to be 31°C. Select a day from the live weather forecast for Helena, Montana, USA for more weather parameters.

Saturday
22nd Aug
31

19

4

7
Sunday
23rd Aug
31

16

9

7
Monday
24th Aug
29

12

13

7
Tuesday
25th Aug
30

13

8

7
Wednesday
26th Aug
31

15

5

6

5-day weather forecast updated at 04:00 on Saturday 22nd 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 Saturday 22nd August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a light breeze of 12 kph from the south-west.

31
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
38
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from SW

Helena weather for Sunday 23rd August 2026

Expect isolated thunderstorms in Helena, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a gentle breeze of 19 kph from the west.

31
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
7
UV index (High)
43
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from W

Helena weather for Monday 24th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.

29
°C maximum temperature
12
°C minimum temperature
clear skies
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
10
kph wind from NW

Helena weather for Tuesday 25th August 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the east.

30
°C maximum temperature
13
°C minimum temperature
broken clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from E

Helena weather for Wednesday 26th August 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.