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Monthly Historical Averages
St. Marys, ON
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January
Average Temperature
High
-2°
Feels -7
Low
-10°
Feels -16
Average Precipitation
4 Days
Rain amount
0.9mm
Snow amount
12.7cm
Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
-3°
12
-1°
13
2°
14
1°
15
-10°
16
-6°
17
-4°
18
-3°
19
-8°
20
-10°
21
-11°
22
-9°
23
-8°
24
-8°
25
-7°
26
27
28
29
30
31
Forecast
Sunday, January 11, 2026
Day
-3°
Feels -10
Wind
37 km/h NW
Gust
66 km/h
Humidity
80%
P.O.P
70%
Snow
1-3 cm
Night
-5°
Feels -12
Wind
29 km/h SW
Gust
48 km/h
Humidity
93%
P.O.P
30%
Historical Averages
Jan 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.