S
M
T
W
T
F
S
29
43°
31°
30
40°
30°
1
40°
31°
2
42°
32°
3
41°
32°
4
41°
30°
5
40°
29°
6
35°
28°
7
37°
26°
8
36°
23°
9
29°
23°
10
32°
25°
11
34°
27°
12
36°
27°
13
38°
26°
14
38°
27°
15
37°
26°
16
38°
26°
17
37°
25°
18
37°
25°
19
36°
24°
20
33°
23°
21
27°
19°
22
32°
12°
23
30°
10°
24
24°
9°
25
22°
8°
26
23°
10°
27
22°
16°
28
34°
19°
29
28°
5°
30
34°
3°
31
22°
3°
1
17°
4°
2
17°
7°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Algoma
Algoma's December 2026 forecast shows daily high temperatures ranging from 17° to 43°, with overnight lows between 3° and 32°. The average high for December is 33° with an average low of 21°. 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 Algoma. See also: January | February | March.