S
M
T
W
T
F
S
30
95°
66°
31
97°
66°
1
97°
70°
2
96°
69°
3
96°
70°
4
95°
71°
5
95°
71°
6
94°
70°
7
96°
67°
8
93°
69°
9
87°
70°
10
93°
69°
11
92°
68°
12
94°
69°
13
95°
69°
14
94°
62°
15
93°
60°
16
84°
58°
17
82°
63°
18
86°
63°
19
84°
61°
20
83°
59°
21
82°
58°
22
82°
63°
23
85°
64°
24
87°
65°
25
89°
65°
26
89°
64°
27
88°
62°
28
86°
60°
29
85°
61°
30
86°
60°
1
85°
59°
2
87°
61°
3
78°
53°
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 78° to 97°, with overnight lows between 53° and 71°. The average high for September is 89° with an average low of 64°. 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.
