S
M
T
W
T
F
S
27
72°
51°
28
69°
53°
29
69°
51°
30
69°
50°
1
67°
56°
2
64°
40°
3
62°
37°
4
66°
40°
5
53°
36°
6
58°
29°
7
71°
46°
8
59°
44°
9
59°
42°
10
61°
54°
11
65°
50°
12
67°
54°
13
56°
36°
14
54°
40°
15
51°
43°
16
53°
41°
17
51°
38°
18
50°
40°
19
57°
41°
20
54°
40°
21
55°
37°
22
51°
38°
23
46°
35°
24
45°
40°
25
56°
41°
26
54°
33°
27
52°
30°
28
43°
30°
29
43°
37°
30
48°
39°
31
51°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Orillia
Orillia's October 2026 forecast shows daily high temperatures ranging from 43° to 67°, with overnight lows between 30° and 54°. The average high for October is 53° with an average low of 40°. 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 Orillia. See also: November | December | January.