S
M
T
W
T
F
S
29
47°
43°
30
49°
41°
1
50°
38°
2
48°
40°
3
46°
41°
4
48°
40°
5
47°
39°
6
46°
39°
7
47°
38°
8
46°
41°
9
48°
38°
10
47°
41°
11
Hist. Avg.
45°
36°
12
Hist. Avg.
44°
36°
13
Hist. Avg.
44°
36°
14
Hist. Avg.
44°
36°
15
Hist. Avg.
44°
36°
16
Hist. Avg.
44°
36°
17
Hist. Avg.
44°
36°
18
Hist. Avg.
44°
36°
19
Hist. Avg.
44°
36°
20
Hist. Avg.
44°
36°
21
Hist. Avg.
43°
36°
22
Hist. Avg.
43°
35°
23
Hist. Avg.
43°
35°
24
Hist. Avg.
43°
35°
25
Hist. Avg.
43°
35°
26
Hist. Avg.
43°
35°
27
Hist. Avg.
43°
35°
28
Hist. Avg.
43°
35°
29
Hist. Avg.
43°
35°
30
Hist. Avg.
43°
35°
31
Hist. Avg.
43°
35°
1
Hist. Avg.
44°
36°
2
Hist. Avg.
44°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Grimsby
Grimsby's December 2026 forecast shows daily high temperatures ranging from 46° to 50°, with overnight lows between 38° and 43°. The average high for December is 47° with an average low of 40°. 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 Grimsby. See also: January | February | March.
