S
M
T
W
T
F
S
28
78°
62°
29
82°
62°
30
77°
68°
1
86°
71°
2
83°
73°
3
86°
73°
4
80°
73°
5
82°
66°
6
80°
64°
7
85°
64°
8
84°
67°
9
78°
67°
10
80°
65°
11
78°
64°
12
81°
63°
13
N/A
14
74°
55°
15
62°
54°
16
67°
52°
17
65°
49°
18
66°
51°
19
65°
50°
20
62°
49°
21
61°
48°
22
73°
54°
23
76°
55°
24
75°
57°
25
77°
54°
26
73°
51°
27
60°
52°
28
59°
51°
29
58°
51°
30
57°
52°
31
60°
52°
1
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in St. Lewis
St. Lewis's July 2026 forecast shows daily high temperatures ranging from 57° to 77°, with overnight lows between 48° and 57°. The average high for July is 66° with an average low of 52°. 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. Lewis. See also: August | September | October.
