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Helena climate
Typical historical weather for Helena, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Helena.
Annual average
20.1°C
across all months
Warmest month
34.1°C
Jul average high
Coolest month
4.6°C
Jan average low
Annual rainfall
1091mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
40.9°C
10 August 2019
Coldest day
-8.4°C
24 December 2022
Wettest day
127.5mm
11 September 2017
Windiest day
10m/s
11 September 2017
See the detail: Helena on 11 September 2017.