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Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Dunnville, ON
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May
Average Temperature
High
19°
Feels 18
Low
8°
Feels 7
Average Precipitation
13 Days
Rain amount
89.5mm
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
16°
10
14°
11
12°
12
10°
13
12°
14
12°
15
15°
16
16°
17
18°
18
18°
19
17°
20
16°
21
16°
22
17°
23
18°
24
25
26
27
28
29
30
31
Forecast
Saturday, May 9, 2026
Day
16°
Feels 15
Wind
28 km/h SW
Gust
42 km/h
Humidity
67%
P.O.P
40%
Rain
<1 mm
Night
6°
Feels 3
Wind
27 km/h SW
Gust
41 km/h
Humidity
94%
P.O.P
70%
Rain
~1 mm
Historical Averages
May 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.