S
M
T
W
T
F
S
27
68°
47°
28
70°
50°
29
71°
50°
30
71°
49°
1
70°
49°
2
70°
50°
3
68°
49°
4
68°
50°
5
67°
48°
6
68°
48°
7
67°
47°
8
67°
49°
9
65°
34°
10
61°
44°
11
57°
46°
12
64°
44°
13
65°
42°
14
59°
44°
15
55°
45°
16
63°
44°
17
62°
43°
18
62°
44°
19
63°
45°
20
64°
44°
21
64°
40°
22
61°
41°
23
59°
30°
24
59°
30°
25
48°
37°
26
48°
39°
27
58°
37°
28
55°
37°
29
52°
34°
30
48°
29°
31
45°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Cornwall
Cornwall's October 2026 forecast shows daily high temperatures ranging from 45° to 71°, with overnight lows between 28° and 50°. The average high for October is 62° with an average low of 42°. 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.
