S
M
T
W
T
F
S
27
62°
45°
28
58°
39°
29
61°
40°
30
59°
38°
1
57°
37°
2
57°
38°
3
62°
43°
4
60°
33°
5
66°
31°
6
55°
29°
7
52°
29°
8
54°
28°
9
53°
29°
10
54°
41°
11
63°
42°
12
59°
32°
13
51°
30°
14
Hist. Avg.
57°
32°
15
Hist. Avg.
57°
32°
16
Hist. Avg.
57°
32°
17
Hist. Avg.
56°
31°
18
Hist. Avg.
56°
31°
19
Hist. Avg.
55°
31°
20
Hist. Avg.
55°
30°
21
Hist. Avg.
54°
30°
22
Hist. Avg.
54°
29°
23
Hist. Avg.
53°
29°
24
Hist. Avg.
53°
29°
25
Hist. Avg.
52°
28°
26
Hist. Avg.
51°
28°
27
Hist. Avg.
51°
27°
28
Hist. Avg.
50°
27°
29
Hist. Avg.
50°
27°
30
Hist. Avg.
49°
26°
31
Hist. Avg.
49°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Grantham
Grantham's October 2026 forecast shows daily high temperatures ranging from 51° to 66°, with overnight lows between 28° and 45°. The average high for October is 58° with an average low of 36°. 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 Grantham. See also: November | December | January.
