Monthly Historical AveragesSt. Thomas, ON
Average Temperature
High
13°
Feels 11
Low
3°
Feels -1
Average Precipitation
9 Days
39.8mm
2.7cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, April 21, 2026
Day
14°Feels 13
Wind
28 km/h S
Gust
42 km/h
Humidity
44%
P.O.P
30%
Night
8°Feels 4
Wind
15 km/h S
Gust
24 km/h
Humidity
100%
P.O.P
40%
Rain
~1 mm
Historical AveragesApr 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity