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.

Sunday
16th Aug
81

54

11

6
Monday
17th Aug
81

57

7

6
Tuesday
18th Aug
81

61

9

7
Wednesday
19th Aug
82

57

13

7
Thursday
20th Aug
86

57

13

7

5-day weather forecast updated at 04:00 on Sunday 16th August 2026 GMT

More about Helena

Helena by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Montana

GO Airport Shuttle discount code: 5% off airport transfers

Discount Code

Save EXTRA 5% on airport transfers worldwide
Book private taxis & shuttle buses with discount code
Enter in coupon box on 'Reservations' page

Show discount code

******WEB

Redeem GO Airport Shuttle discount code >>

Expires at 23:59 on Thursday 31st Dec 2026

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 Sunday 16th August 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 11 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 south-west.

81
°F maximum temperature
54
°F minimum temperature
isolated thunderstorms
11
hours of sunshine
6
UV index (High)
25
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
8
mph wind from SW

Helena weather for Monday 17th August 2026

Expect broken clouds in Helena, Montana with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-west.

81
°F maximum temperature
57
°F minimum temperature
broken clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
6
mph wind from SW

Helena weather for Tuesday 18th August 2026

Expect sunshine and showers in Helena, Montana with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a light breeze of 7 mph from the south-west.

81
°F maximum temperature
61
°F minimum temperature
sunshine and showers
9
hours of sunshine
7
UV index (High)
30
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
7
mph wind from SW

Helena weather for Wednesday 19th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 82°F, 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 gentle breeze of 8 mph from the south-west.

82
°F maximum temperature
57
°F minimum temperature
clear skies
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
8
mph wind from SW

Helena weather for Thursday 20th August 2026

Expect clear skies in Helena, Montana with a maximum temperature of 86°F, moderate 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 7 mph from the north-west.