S
M
T
W
T
F
S
28
84°
70°
29
91°
74°
30
92°
75°
1
93°
73°
2
93°
73°
3
94°
75°
4
90°
72°
5
84°
70°
6
86°
70°
7
86°
68°
8
87°
63°
9
88°
66°
10
86°
71°
11
82°
70°
12
86°
65°
13
87°
61°
14
90°
62°
15
91°
66°
16
94°
70°
17
90°
75°
18
92°
72°
19
83°
65°
20
86°
62°
21
90°
70°
22
73°
54°
23
78°
50°
24
80°
57°
25
75°
55°
26
85°
68°
27
87°
66°
28
86°
61°
29
83°
62°
30
86°
65°
31
84°
67°
1
80°
67°
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 86°, with overnight lows between 61° and 67°. The average high for July is 84° 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.