S
M
T
W
T
F
S
27
81°
56°
28
80°
46°
29
79°
47°
30
69°
52°
1
68°
51°
2
70°
53°
3
69°
52°
4
70°
47°
5
76°
52°
6
71°
51°
7
76°
52°
8
76°
49°
9
75°
42°
10
67°
42°
11
70°
44°
12
69°
39°
13
70°
38°
14
64°
40°
15
66°
46°
16
73°
47°
17
69°
46°
18
70°
47°
19
65°
44°
20
71°
41°
21
63°
37°
22
64°
36°
23
63°
38°
24
72°
45°
25
72°
44°
26
Hist. Avg.
65°
38°
27
Hist. Avg.
64°
38°
28
Hist. Avg.
64°
37°
29
Hist. Avg.
64°
37°
30
Hist. Avg.
64°
37°
31
Hist. Avg.
63°
36°
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 63° to 81°, with overnight lows between 36° and 56°. The average high for October is 71° 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.
