S
M
T
W
T
F
S
27
67°
52°
28
68°
49°
29
73°
56°
30
71°
62°
1
75°
55°
2
62°
46°
3
63°
46°
4
66°
46°
5
60°
43°
6
65°
45°
7
67°
50°
8
63°
46°
9
62°
44°
10
60°
43°
11
61°
45°
12
62°
33°
13
55°
40°
14
53°
40°
15
54°
44°
16
59°
46°
17
62°
47°
18
62°
46°
19
63°
46°
20
58°
45°
21
62°
40°
22
51°
38°
23
50°
41°
24
57°
45°
25
61°
44°
26
61°
40°
27
49°
38°
28
49°
40°
29
58°
45°
30
59°
45°
31
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Petrolia
Petrolia's October 2026 forecast shows daily high temperatures ranging from 49° to 75°, with overnight lows between 33° and 62°. The average high for October is 60° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Petrolia. See also: November | December | January.