St. Charles climate

Typical historical weather for St. 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 St. Charles.

Annual average

10.6°C

across all months

Warmest month

28.3°C

Jul average high

Coolest month

-7.8°C

Jan average low

Annual rainfall

1063mm

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

36.5°C

14 June 2022

Coldest day

-34.2°C

31 January 2019

Wettest day

75.2mm

25 June 2021

Windiest day

9.2m/s

24 February 2019