S
M
T
W
T
F
S
28
95°
74°
29
95°
72°
30
90°
70°
1
88°
71°
2
91°
68°
3
91°
70°
4
89°
67°
5
87°
65°
6
85°
67°
7
89°
68°
8
91°
69°
9
90°
66°
10
90°
67°
11
85°
65°
12
86°
68°
13
88°
69°
14
86°
69°
15
80°
67°
16
81°
67°
17
86°
68°
18
88°
69°
19
89°
70°
20
89°
70°
21
90°
71°
22
90°
72°
23
89°
72°
24
90°
71°
25
89°
70°
26
90°
71°
27
90°
70°
28
89°
71°
29
90°
71°
30
89°
70°
31
90°
71°
1
91°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Saint Charles
Saint Charles's July 2026 forecast shows daily high temperatures ranging from 80° to 95°, with overnight lows between 65° and 74°. The average high for July is 89° 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 Saint Charles. See also: August | September | October.
