The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
Forecasts
Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Sarnia 45, ON
Content continues below
January
Average Temperature
High
-1°
Feels -5
Low
-8°
Feels -14
Average Precipitation
3 Days
Rain amount
3.8mm
Snow amount
5.3cm
Content continues below
Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
10°
9
13°
10
3°
11
-1°
12
2°
13
3°
14
0°
15
-4°
16
-4°
17
-2°
18
-5°
19
-7°
20
-7°
21
-7°
22
-6°
23
24
25
26
27
28
29
30
31
Forecast
Thursday, January 8, 2026
Day
10°
Feels 8
Wind
22 km/h S
Gust
33 km/h
Humidity
66%
P.O.P
30%
Night
6°
Feels 1
Wind
41 km/h S
Gust
62 km/h
Humidity
93%
P.O.P
100%
Rain
5-10 mm
Historical Averages
Jan 8
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.