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Hourly Forecast
Daylight Hours
06:36
Sunrise
18:47
Sunset
Moon
Waxing Crescent
11:04
Moonrise
20:40
Moonset
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Weather in Helena today, September 15, 2026
Expect a mostly clear day in Helena on September 15, 2026, with sunshine dominating from morning through evening. Cloud should stay limited, so the overall feel remains bright and settled.
Temperatures climb from an overnight low near 21°C toward a daytime high of about 36°C. Expect humidity between 28% and 50%, most humid near 23:00. A lighter breeze peaks around 17:00 near 4.0 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 18:00. Outdoor plans may still want a flexible backup. Views remain open at about 16.1 km. Daylight runs from 06:36 to 18:47, lasting 12 hours 11 minutes of sunlight today.
The practical takeaway for Helena is a bright September 15, 2026, ideal for outdoor errands before temperatures ease from about 36°C.
Frequently asked questions about weather in Helena
How warm does it get in Helena?
The warmest month in Helena is July, with average high temperatures of 32°C. The average temperature during this period is around 27°C.
How cold does it get in Helena?
The coldest month in Helena is January, with average low temperatures of 3°C. The average temperature during this period is around 8°C.
What is the wettest time of year in Helena?
The wettest month in Helena is February, with an average of 157mm of precipitation.
What is the driest time of year in Helena?
The driest month in Helena is September, with an average of 76mm of precipitation.
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