S
M
T
W
T
F
S
28
82°
62°
29
83°
58°
30
80°
58°
1
81°
63°
2
83°
65°
3
86°
66°
4
87°
66°
5
86°
65°
6
88°
60°
7
85°
60°
8
83°
59°
9
83°
65°
10
85°
63°
11
86°
66°
12
87°
67°
13
88°
61°
14
83°
59°
15
83°
61°
16
84°
61°
17
84°
66°
18
86°
66°
19
89°
62°
20
87°
64°
21
88°
63°
22
82°
64°
23
82°
62°
24
83°
67°
25
83°
67°
26
86°
66°
27
84°
67°
28
86°
67°
29
89°
66°
30
90°
67°
31
89°
67°
1
89°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Devon
Devon's July 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 58° and 67°. The average high for July is 85° with an average low of 64°. 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 Devon. See also: August | September | October.