Monthly Historical AveragesSt. Marys, ON

Average Temperature
High
25°
Feels 25
Low
13°
Feels 12
Average Precipitation
10 Days
Rain amount
57.3mm
Snow amount
0cm
Content continues below

Daily Historical Averages

S
M
T
W
T
F
S
ForecastFriday, June 19, 2026
Day
Mainly sunny
21°Feels 22
Wind
30 km/h W
Gust
45 km/h
Humidity
53%
P.O.P
10%
Night
Mainly clear
9°Feels 7
Wind
28 km/h NW
Gust
42 km/h
Humidity
87%
P.O.P
10%
Historical AveragesJun 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
Content continues below