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Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Lake Rosseau, ON
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May
Average Temperature
High
18°
Feels 17
Low
5°
Feels 4
Average Precipitation
11 Days
Rain amount
78.6mm
Snow amount
0.4cm
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°
13
10°
14
12°
15
17°
16
19°
17
18°
18
20°
19
16°
20
16°
21
18°
22
18°
23
17°
24
17°
25
18°
26
19°
27
28
29
30
31
Forecast
Tuesday, May 12, 2026
Day
13°
Feels 12
Wind
12 km/h S
Gust
29 km/h
Humidity
35%
P.O.P
30%
Night
5°
Feels 1
Wind
22 km/h SE
Gust
38 km/h
Humidity
100%
P.O.P
90%
Rain
15-20 mm
Historical Averages
May 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.