S
M
T
W
T
F
S
27
77°
55°
28
77°
46°
29
75°
47°
30
64°
50°
1
65°
51°
2
66°
53°
3
65°
48°
4
67°
46°
5
70°
54°
6
71°
54°
7
73°
53°
8
71°
50°
9
72°
45°
10
64°
42°
11
62°
48°
12
62°
41°
13
69°
39°
14
58°
40°
15
60°
47°
16
66°
47°
17
65°
43°
18
62°
48°
19
59°
39°
20
63°
40°
21
57°
38°
22
58°
39°
23
56°
39°
24
67°
46°
25
67°
46°
26
Hist. Avg.
60°
40°
27
Hist. Avg.
60°
40°
28
Hist. Avg.
60°
40°
29
Hist. Avg.
59°
39°
30
Hist. Avg.
59°
39°
31
Hist. Avg.
58°
39°
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 56° to 77°, with overnight lows between 38° and 55°. The average high for October is 66° with an average low of 46°. 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.
