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Saint Charles climate
Typical historical weather for Saint Charles, 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 Charles.
Annual average
15.3°C
across all months
Warmest month
31.3°C
Jul average high
Coolest month
-0.2°C
Jan average low
Annual rainfall
1144mm
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
37.7°C
20 July 2019
Coldest day
-14.1°C
7 January 2018
Wettest day
99mm
9 July 2022
Windiest day
9.8m/s
2 March 2018
See the detail: Saint Charles on 9 July 2022.