S
M
T
W
T
F
S
28
94°
76°
29
95°
76°
30
95°
76°
1
92°
75°
2
88°
74°
3
91°
72°
4
92°
74°
5
92°
71°
6
90°
71°
7
90°
74°
8
90°
72°
9
93°
73°
10
92°
76°
11
93°
73°
12
88°
73°
13
80°
73°
14
85°
73°
15
88°
75°
16
93°
76°
17
96°
75°
18
93°
77°
19
95°
76°
20
94°
77°
21
93°
76°
22
91°
77°
23
92°
76°
24
91°
76°
25
91°
75°
26
90°
76°
27
92°
78°
28
93°
77°
29
93°
77°
30
92°
78°
31
93°
77°
1
93°
77°
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 96°, with overnight lows between 73° and 78°. The average high for July is 91° with an average low of 76°. 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.
