S
M
T
W
T
F
S
28
92°
73°
29
94°
72°
30
95°
71°
1
97°
72°
2
96°
71°
3
95°
70°
4
94°
69°
5
89°
72°
6
85°
70°
7
88°
72°
8
90°
71°
9
91°
70°
10
91°
74°
11
92°
72°
12
83°
72°
13
82°
70°
14
81°
71°
15
84°
72°
16
86°
71°
17
89°
73°
18
90°
74°
19
88°
71°
20
90°
72°
21
89°
71°
22
88°
70°
23
90°
71°
24
91°
74°
25
92°
73°
26
91°
73°
27
91°
72°
28
90°
73°
29
91°
73°
30
88°
72°
31
87°
72°
1
85°
71°
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 81° to 92°, with overnight lows between 70° and 74°. The average high for July is 88° with an average low of 72°. 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.
