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Monthly Historical Averages
Oastler Lake Provincial Park, ON
Your May weather outlook is here!
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May
Average Temperature
High
18°
Feels 18
Low
6°
Feels 4
Average Precipitation
10 Days
Rain amount
86.5mm
Snow amount
0.3cm
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Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
7°
2
6°
3
9°
4
14°
5
9°
6
9°
7
9°
8
7°
9
10°
10
11°
11
12°
12
13°
13
14°
14
14°
15
14°
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Friday, May 1, 2026
Day
7°
Feels 5
Wind
15 km/h W
Gust
37 km/h
Humidity
53%
P.O.P
40%
Snow
<1 cm
Rain
<1 mm
Night
-1°
Feels -4
Wind
12 km/h NW
Gust
30 km/h
Humidity
93%
P.O.P
30%
Historical Averages
May 1
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.