S
M
T
W
T
F
S
27
30°
12°
28
30°
10°
29
31°
12°
30
29°
22°
31
31°
24°
1
36°
17°
2
32°
19°
3
26°
15°
4
30°
24°
5
31°
28°
6
36°
29°
7
40°
20°
8
43°
15°
9
29°
16°
10
21°
18°
11
25°
16°
12
23°
14°
13
22°
10°
14
19°
10°
15
22°
17°
16
24°
18°
17
27°
24°
18
30°
15°
19
32°
11°
20
24°
11°
21
20°
17°
22
27°
25°
23
34°
26°
24
35°
28°
25
36°
28°
26
38°
26°
27
37°
27°
28
38°
25°
29
37°
25°
30
33°
25°
31
Hist. Avg.
31°
17°
1
Hist. Avg.
31°
17°
2
Hist. Avg.
31°
18°
3
Hist. Avg.
32°
18°
4
Hist. Avg.
32°
18°
5
Hist. Avg.
32°
18°
6
Hist. Avg.
32°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Grimsby
Grimsby's January 2027 forecast shows daily high temperatures ranging from 19° to 43°, with overnight lows between 10° and 29°. The average high for January is 30° with an average low of 19°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Grimsby. See also: February | March | April.