S
M
T
W
T
F
S
27
63°
50°
28
63°
50°
29
64°
52°
30
66°
52°
1
70°
55°
2
69°
53°
3
69°
54°
4
70°
55°
5
70°
55°
6
71°
54°
7
71°
56°
8
70°
55°
9
70°
54°
10
69°
55°
11
70°
54°
12
70°
53°
13
65°
48°
14
62°
47°
15
64°
49°
16
62°
48°
17
64°
49°
18
64°
48°
19
66°
50°
20
67°
52°
21
68°
53°
22
68°
53°
23
62°
52°
24
61°
53°
25
65°
53°
26
61°
48°
27
59°
48°
28
60°
46°
29
59°
45°
30
61°
48°
31
64°
49°
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 59° to 71°, with overnight lows between 45° and 56°. The average high for October is 66° with an average low of 51°. 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.