S
M
T
W
T
F
S
28
90°
75°
29
92°
74°
30
92°
70°
1
91°
71°
2
92°
70°
3
89°
70°
4
87°
67°
5
83°
71°
6
82°
64°
7
83°
65°
8
82°
66°
9
82°
65°
10
83°
71°
11
86°
71°
12
88°
70°
13
87°
70°
14
86°
71°
15
84°
70°
16
85°
68°
17
84°
69°
18
85°
69°
19
86°
71°
20
90°
70°
21
84°
65°
22
83°
67°
23
84°
68°
24
85°
70°
25
88°
71°
26
87°
71°
27
86°
70°
28
83°
69°
29
84°
71°
30
88°
71°
31
87°
70°
1
88°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Du Quoin
Du Quoin's July 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 64° and 75°. The average high for July is 86° with an average low of 69°. 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 Du Quoin. See also: August | September | October.