Monthly Historical AveragesPort Arthur, ON
Average Temperature
High
-8°
Feels -12
Low
-17°
Feels -24
Average Precipitation
7 Days
0mm
54cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, January 11, 2026
Day
-3°Feels -8
Wind
13 km/h SW
Gust
20 km/h
Humidity
68%
P.O.P
40%
Snow
<1 cm
Night
-4°Feels -10
Wind
16 km/h W
Gust
24 km/h
Humidity
86%
P.O.P
70%
Snow
1-3 cm
Historical AveragesJan 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity