S
M
T
W
T
F
S
28
93°
73°
29
93°
73°
30
96°
77°
1
95°
74°
2
96°
72°
3
93°
74°
4
91°
73°
5
90°
70°
6
88°
68°
7
88°
70°
8
90°
73°
9
91°
75°
10
92°
75°
11
89°
73°
12
88°
72°
13
89°
74°
14
92°
72°
15
93°
71°
16
90°
72°
17
85°
68°
18
86°
70°
19
92°
76°
20
92°
75°
21
93°
75°
22
92°
74°
23
93°
76°
24
93°
76°
25
92°
75°
26
93°
77°
27
94°
76°
28
94°
77°
29
95°
75°
30
93°
76°
31
94°
76°
1
92°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Louis
St. Louis's July 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 68° and 77°. The average high for July is 91° with an average low of 74°. 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. Louis. See also: August | September | October.