S
M
T
W
T
F
S
29
35°
26°
30
34°
22°
1
33°
21°
2
33°
26°
3
35°
29°
4
38°
27°
5
38°
31°
6
40°
30°
7
36°
29°
8
32°
29°
9
33°
26°
10
30°
26°
11
41°
25°
12
40°
26°
13
34°
26°
14
36°
21°
15
34°
18°
16
29°
23°
17
31°
25°
18
33°
26°
19
34°
27°
20
35°
27°
21
36°
28°
22
39°
28°
23
39°
31°
24
42°
25°
25
42°
20°
26
40°
21°
27
28°
17°
28
29°
24°
29
32°
25°
30
38°
27°
31
38°
28°
1
39°
26°
2
41°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Simcoe
Simcoe's December 2026 forecast shows daily high temperatures ranging from 28° to 42°, with overnight lows between 17° and 31°. The average high for December is 36° with an average low of 25°. 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 Simcoe. See also: January | February | March.
