S
M
T
W
T
F
S
28
86°
54°
29
87°
55°
30
79°
57°
1
91°
67°
2
91°
70°
3
88°
70°
4
80°
56°
5
83°
52°
6
83°
58°
7
84°
57°
8
86°
62°
9
80°
67°
10
81°
59°
11
80°
55°
12
83°
54°
13
83°
56°
14
86°
70°
15
80°
64°
16
80°
54°
17
76°
51°
18
76°
60°
19
74°
57°
20
78°
56°
21
81°
59°
22
69°
50°
23
77°
47°
24
80°
55°
25
85°
52°
26
84°
60°
27
84°
63°
28
75°
61°
29
74°
66°
30
80°
63°
31
84°
59°
1
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Cornwall
Cornwall's July 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Cornwall. See also: August | September | October.
