Monthly Historical AveragesRossmore, ON
Average Temperature
High
20°
Feels 20
Low
8°
Feels 7
Average Precipitation
11 Days
77.9mm
0.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 17, 2026
Day
23°Feels 27
Wind
15 km/h NW
Gust
27 km/h
Humidity
53%
P.O.P
30%
Night
14°Feels 13
Wind
16 km/h SE
Gust
24 km/h
Humidity
94%
P.O.P
60%
Rain
~1 mm
Historical AveragesMay 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity