Monthly Historical AveragesPort Arthur, ON
Average Temperature
High
13°
Feels 12
Low
4°
Feels 2
Average Precipitation
12 Days
90.6mm
2.7cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, May 27, 2026
Day
17°Feels 16
Wind
18 km/h NE
Gust
27 km/h
Humidity
48%
P.O.P
10%
Night
6°Feels 5
Wind
18 km/h NE
Gust
27 km/h
Humidity
87%
P.O.P
0%
Historical AveragesMay 27
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity