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Monthly
Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Petrolia, ON
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August
Average Temperature
High
26°
Feels 27
Low
15°
Feels 15
Average Precipitation
11 Days
Rain amount
58.3mm
Snow amount
0cm
Daily Historical Averages
August 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
18
19
20
26°
21
28°
22
24°
23
20°
24
19°
25
23°
26
24°
27
24°
28
23°
29
22°
30
22°
31
22°
Forecast
Thursday, August 20, 2026
Day
26°
Feels 29
Wind
19 km/h E
Gust
29 km/h
Humidity
42%
P.O.P
30%
Night
14°
Feels 13
Wind
18 km/h E
Gust
27 km/h
Humidity
82%
P.O.P
20%
Historical Averages
Aug 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.