S
M
T
W
T
F
S
28
88°
73°
29
89°
74°
30
88°
69°
1
92°
70°
2
92°
68°
3
91°
70°
4
92°
68°
5
88°
67°
6
82°
63°
7
82°
64°
8
83°
65°
9
83°
69°
10
87°
72°
11
88°
72°
12
88°
71°
13
85°
71°
14
85°
70°
15
86°
68°
16
86°
71°
17
85°
70°
18
86°
69°
19
89°
70°
20
91°
69°
21
85°
65°
22
85°
65°
23
87°
67°
24
89°
71°
25
90°
72°
26
92°
72°
27
89°
71°
28
85°
68°
29
88°
72°
30
93°
73°
31
93°
72°
1
89°
72°
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 82° to 93°, with overnight lows between 63° and 74°. The average high for July is 88° with an average low of 70°. 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.