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

18.3°C

across all months

Warmest month

32.2°C

Jul average high

Coolest month

2.6°C

Jan average low

Annual rainfall

1387mm

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

37.2°C

17 August 2019

Coldest day

-11.9°C

17 January 2024

Wettest day

91.4mm

8 March 2024

Windiest day

7m/s

15 March 2025