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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Rossmore, ON
Content continues below
May
Average Temperature
High
20°
Feels 20
Low
8°
Feels 7
Average Precipitation
11 Days
Rain amount
77.9mm
Snow amount
0.1cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
23°
18
25°
19
25°
20
15°
21
14°
22
17°
23
15°
24
18°
25
18°
26
20°
27
20°
28
21°
29
20°
30
21°
31
21°
Forecast
Sunday, May 17, 2026
Day
23°
Feels 27
Wind
12 km/h NW
Gust
27 km/h
Humidity
53%
P.O.P
30%
Night
14°
Feels 13
Wind
17 km/h SE
Gust
24 km/h
Humidity
94%
P.O.P
60%
Rain
~1 mm
Historical Averages
May 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.