S
M
T
W
T
F
S
27
84°
63°
28
83°
63°
29
82°
62°
30
82°
62°
1
81°
60°
2
82°
62°
3
82°
61°
4
81°
61°
5
79°
60°
6
79°
61°
7
80°
61°
8
79°
60°
9
77°
60°
10
76°
56°
11
70°
48°
12
65°
48°
13
64°
46°
14
63°
44°
15
63°
44°
16
64°
48°
17
64°
47°
18
61°
43°
19
60°
45°
20
60°
46°
21
61°
50°
22
62°
52°
23
75°
41°
24
67°
43°
25
70°
39°
26
66°
33°
27
57°
37°
28
59°
47°
29
61°
45°
30
58°
35°
31
59°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Frontenac
Frontenac's October 2026 forecast shows daily high temperatures ranging from 57° to 84°, with overnight lows between 33° and 63°. The average high for October is 70° with an average low of 50°. 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 Frontenac. See also: November | December | January.