S
M
T
W
T
F
S
30
70°
52°
31
68°
54°
1
71°
59°
2
63°
55°
3
66°
50°
4
68°
46°
5
66°
48°
6
68°
46°
7
68°
50°
8
81°
50°
9
82°
54°
10
66°
54°
11
72°
50°
12
67°
51°
13
69°
50°
14
70°
50°
15
71°
50°
16
65°
52°
17
64°
53°
18
61°
52°
19
64°
51°
20
63°
53°
21
62°
52°
22
66°
52°
23
66°
53°
24
67°
52°
25
64°
53°
26
67°
55°
27
63°
50°
28
63°
51°
29
65°
53°
30
70°
55°
1
70°
55°
2
71°
54°
3
70°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Petrolia
Petrolia's September 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 50° and 55°. The average high for September is 67° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Petrolia. See also: October | November | December.
