S
M
T
W
T
F
S
27
64°
54°
28
63°
51°
29
58°
51°
30
58°
48°
1
59°
48°
2
58°
47°
3
59°
48°
4
58°
47°
5
57°
48°
6
58°
50°
7
57°
53°
8
58°
48°
9
61°
48°
10
60°
49°
11
Hist. Avg.
58°
47°
12
Hist. Avg.
58°
46°
13
Hist. Avg.
57°
46°
14
Hist. Avg.
57°
46°
15
Hist. Avg.
57°
46°
16
Hist. Avg.
57°
46°
17
Hist. Avg.
57°
46°
18
Hist. Avg.
56°
46°
19
Hist. Avg.
56°
45°
20
Hist. Avg.
56°
45°
21
Hist. Avg.
56°
45°
22
Hist. Avg.
55°
45°
23
Hist. Avg.
55°
45°
24
Hist. Avg.
55°
45°
25
Hist. Avg.
55°
44°
26
Hist. Avg.
55°
44°
27
Hist. Avg.
54°
44°
28
Hist. Avg.
54°
44°
29
Hist. Avg.
54°
44°
30
Hist. Avg.
54°
44°
31
Hist. Avg.
53°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Grimsby
Grimsby's October 2026 forecast shows daily high temperatures ranging from 57° to 64°, with overnight lows between 47° and 54°. The average high for October is 59° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Grimsby. See also: November | December | January.