S
M
T
W
T
F
S
28
83°
68°
29
90°
72°
30
90°
72°
1
92°
72°
2
93°
74°
3
95°
73°
4
90°
70°
5
86°
70°
6
86°
70°
7
84°
70°
8
86°
72°
9
87°
71°
10
86°
71°
11
79°
71°
12
85°
69°
13
89°
68°
14
90°
72°
15
90°
68°
16
92°
70°
17
92°
74°
18
89°
73°
19
85°
71°
20
86°
66°
21
87°
73°
22
75°
61°
23
77°
57°
24
79°
61°
25
79°
60°
26
81°
67°
27
87°
67°
28
85°
66°
29
80°
61°
30
84°
62°
31
85°
67°
1
79°
68°
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 79° to 85°, with overnight lows between 61° and 68°. The average high for July is 83° with an average low of 65°. 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.