S
M
T
W
T
F
S
29
46°
38°
30
50°
32°
1
54°
29°
2
44°
23°
3
43°
20°
4
39°
26°
5
41°
32°
6
47°
37°
7
51°
36°
8
53°
35°
9
40°
25°
10
57°
36°
11
58°
31°
12
Hist. Avg.
47°
28°
13
Hist. Avg.
47°
28°
14
Hist. Avg.
46°
28°
15
Hist. Avg.
46°
28°
16
Hist. Avg.
46°
27°
17
Hist. Avg.
45°
27°
18
Hist. Avg.
45°
27°
19
Hist. Avg.
45°
27°
20
Hist. Avg.
44°
26°
21
Hist. Avg.
44°
26°
22
Hist. Avg.
44°
26°
23
Hist. Avg.
44°
26°
24
Hist. Avg.
44°
26°
25
Hist. Avg.
43°
25°
26
Hist. Avg.
43°
25°
27
Hist. Avg.
43°
25°
28
Hist. Avg.
43°
25°
29
Hist. Avg.
43°
25°
30
Hist. Avg.
42°
24°
31
Hist. Avg.
42°
24°
1
Hist. Avg.
42°
24°
2
Hist. Avg.
42°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Frontenac
Frontenac's December 2026 forecast shows daily high temperatures ranging from 39° to 58°, with overnight lows between 20° and 38°. The average high for December is 48° with an average low of 31°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Frontenac. See also: January | February | March.
