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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Rockdale, ON
Content continues below
May
Average Temperature
High
20°
Feels 19
Low
7°
Feels 6
Average Precipitation
9 Days
Rain amount
40.7mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
11°
7
12°
8
13°
9
16°
10
15°
11
13°
12
13°
13
14°
14
14°
15
15°
16
15°
17
14°
18
15°
19
17°
20
17°
21
22
23
24
25
26
27
28
29
30
31
Forecast
Wednesday, May 6, 2026
Day
11°
Feels 10
Wind
12 km/h S
Gust
24 km/h
Humidity
58%
P.O.P
60%
Rain
2-4 mm
Night
5°
Feels 2
Wind
15 km/h S
Gust
29 km/h
Humidity
87%
P.O.P
30%
Historical Averages
May 6
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.