S
M
T
W
T
F
S
27
73°
42°
28
73°
38°
29
68°
38°
30
60°
41°
1
59°
37°
2
60°
42°
3
59°
43°
4
66°
45°
5
67°
48°
6
68°
46°
7
66°
45°
8
61°
46°
9
61°
42°
10
62°
39°
11
55°
42°
12
55°
39°
13
62°
35°
14
53°
35°
15
55°
43°
16
60°
37°
17
59°
33°
18
54°
34°
19
52°
33°
20
50°
32°
21
51°
36°
22
50°
33°
23
49°
35°
24
60°
39°
25
60°
40°
26
Hist. Avg.
56°
36°
27
Hist. Avg.
55°
35°
28
Hist. Avg.
55°
35°
29
Hist. Avg.
55°
35°
30
Hist. Avg.
54°
35°
31
Hist. Avg.
54°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Cornwall
Cornwall's October 2026 forecast shows daily high temperatures ranging from 49° to 73°, with overnight lows between 32° and 48°. The average high for October is 60° with an average low of 39°. 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 Cornwall. See also: November | December | January.
