Monthly Historical AveragesCharleston, ON
Average Temperature
High
24°
Feels 24
Low
13°
Feels 13
Average Precipitation
12 Days
85.7mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, June 13, 2026
Day
27°Feels 32
Wind
21 km/h SW
Gust
34 km/h
Humidity
42%
P.O.P
30%
Night
17°Feels 17
Wind
20 km/h SW
Gust
31 km/h
Humidity
83%
P.O.P
40%
Rain
~1 mm
Historical AveragesJun 13
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity