S
M
T
W
T
F
S
29
36°
29°
30
37°
28°
1
36°
25°
2
36°
22°
3
35°
22°
4
32°
31°
5
36°
33°
6
38°
38°
7
45°
31°
8
48°
29°
9
45°
25°
10
34°
23°
11
33°
24°
12
32°
23°
13
32°
28°
14
33°
27°
15
33°
26°
16
35°
27°
17
34°
30°
18
36°
30°
19
37°
32°
20
41°
29°
21
46°
23°
22
40°
25°
23
35°
31°
24
40°
30°
25
41°
27°
26
37°
24°
27
33°
16°
28
34°
17°
29
26°
13°
30
28°
11°
31
27°
13°
1
22°
16°
2
25°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Grand Haven
Grand Haven's December 2026 forecast shows daily high temperatures ranging from 22° to 48°, with overnight lows between 11° and 38°. The average high for December is 35° 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 Grand Haven. See also: January | February | March.