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Saint Helens climate
Typical historical weather for Saint Helens, 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 Saint Helens.
Annual average
11.7°C
across all months
Warmest month
27.5°C
Aug average high
Coolest month
2°C
Feb average low
Annual rainfall
1583mm
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
44.7°C
28 June 2021
Coldest day
-14.2°C
13 January 2017
Wettest day
75.1mm
4 November 2022
Windiest day
6.4m/s
2 February 2017
See the detail: Saint Helens on 4 November 2022.