S
M
T
W
T
F
S
28
89°
67°
29
83°
70°
30
85°
66°
1
89°
62°
2
85°
65°
3
84°
70°
4
91°
69°
5
92°
70°
6
90°
70°
7
91°
69°
8
92°
68°
9
89°
69°
10
92°
71°
11
92°
70°
12
87°
67°
13
86°
71°
14
Hist. Avg.
89°
68°
15
Hist. Avg.
89°
68°
16
Hist. Avg.
89°
68°
17
Hist. Avg.
89°
68°
18
Hist. Avg.
89°
68°
19
Hist. Avg.
89°
68°
20
Hist. Avg.
89°
68°
21
Hist. Avg.
89°
68°
22
Hist. Avg.
89°
68°
23
Hist. Avg.
89°
68°
24
Hist. Avg.
89°
68°
25
Hist. Avg.
89°
68°
26
Hist. Avg.
89°
68°
27
Hist. Avg.
89°
68°
28
Hist. Avg.
89°
68°
29
Hist. Avg.
89°
68°
30
Hist. Avg.
89°
68°
31
Hist. Avg.
89°
68°
1
Hist. Avg.
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Lake St. Louis
Lake St. Louis's July 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 62° and 71°. The average high for July is 89° with an average low of 68°. 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 Lake St. Louis. See also: August | September | October.
