S
M
T
W
T
F
S
28
100°
66°
29
93°
65°
30
91°
56°
1
98°
60°
2
101°
58°
3
99°
65°
4
97°
65°
5
91°
60°
6
96°
61°
7
97°
63°
8
99°
64°
9
97°
65°
10
94°
61°
11
96°
64°
12
99°
66°
13
98°
64°
14
107°
71°
15
95°
66°
16
96°
65°
17
96°
66°
18
97°
66°
19
96°
65°
20
95°
65°
21
96°
64°
22
96°
65°
23
95°
66°
24
96°
65°
25
95°
65°
26
91°
64°
27
90°
65°
28
91°
62°
29
94°
64°
30
95°
65°
31
89°
65°
1
87°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Charles Mesa
St. Charles Mesa's July 2026 forecast shows daily high temperatures ranging from 87° to 107°, with overnight lows between 58° and 71°. The average high for July is 96° with an average low of 64°. 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 St. Charles Mesa. See also: August | September | October.
