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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Waterloo, ON
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May
Average Temperature
High
19°
Feels 18
Low
7°
Feels 5
Average Precipitation
12 Days
Rain amount
84.9mm
Snow amount
0.1cm
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
28°
18
29°
19
28°
20
11°
21
14°
22
17°
23
16°
24
19°
25
20°
26
20°
27
21°
28
21°
29
20°
30
21°
31
21°
Forecast
Sunday, May 17, 2026
Day
28°
Feels 34
Wind
17 km/h SW
Gust
27 km/h
Humidity
41%
P.O.P
40%
Night
17°
Feels 16
Wind
17 km/h S
Gust
27 km/h
Humidity
100%
P.O.P
80%
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.