S
M
T
W
T
F
S
28
81°
64°
29
82°
61°
30
81°
66°
1
83°
68°
2
82°
65°
3
84°
62°
4
81°
63°
5
81°
70°
6
87°
70°
7
88°
69°
8
89°
67°
9
88°
62°
10
81°
61°
11
81°
63°
12
82°
70°
13
82°
71°
14
89°
71°
15
89°
73°
16
91°
72°
17
90°
67°
18
88°
65°
19
82°
64°
20
84°
63°
21
80°
63°
22
81°
64°
23
79°
63°
24
79°
62°
25
80°
62°
26
82°
63°
27
81°
70°
28
82°
69°
29
86°
67°
30
87°
66°
31
87°
66°
1
87°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Decatur
Decatur's July 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 61° and 73°. The average high for July is 84° with an average low of 66°. 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 Decatur. See also: August | September | October.
