S
M
T
W
T
F
S
26
82°
62°
27
86°
65°
28
72°
67°
29
74°
63°
30
78°
63°
31
86°
63°
1
79°
68°
2
70°
66°
3
74°
56°
4
83°
53°
5
85°
59°
6
82°
68°
7
84°
66°
8
87°
63°
9
82°
59°
10
83°
67°
11
80°
64°
12
82°
64°
13
78°
61°
14
78°
61°
15
79°
59°
16
83°
66°
17
74°
58°
18
80°
58°
19
74°
56°
20
75°
56°
21
80°
50°
22
76°
61°
23
73°
57°
24
67°
55°
25
74°
60°
26
80°
58°
27
78°
63°
28
72°
54°
29
82°
58°
30
68°
65°
31
76°
68°
1
88°
69°
2
94°
70°
3
80°
63°
4
76°
63°
5
74°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Petrolia
Petrolia's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Petrolia. See also: September | October | November.