S
M
T
W
T
F
S
27
78°
51°
28
77°
45°
29
74°
45°
30
65°
50°
1
64°
46°
2
66°
51°
3
64°
49°
4
68°
48°
5
71°
54°
6
72°
54°
7
70°
53°
8
67°
52°
9
69°
48°
10
67°
42°
11
61°
49°
12
61°
42°
13
68°
40°
14
58°
41°
15
60°
48°
16
65°
44°
17
66°
42°
18
61°
41°
19
58°
39°
20
56°
40°
21
55°
40°
22
57°
41°
23
57°
41°
24
65°
46°
25
66°
46°
26
Hist. Avg.
58°
35°
27
Hist. Avg.
58°
35°
28
Hist. Avg.
58°
34°
29
Hist. Avg.
58°
34°
30
Hist. Avg.
57°
34°
31
Hist. Avg.
57°
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 55° to 78°, with overnight lows between 39° and 54°. The average high for October is 65° 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.
