S
M
T
W
T
F
S
31
77°
65°
1
85°
66°
2
81°
56°
3
82°
52°
4
85°
55°
5
86°
68°
6
86°
71°
7
87°
71°
8
86°
69°
9
93°
75°
10
92°
74°
11
91°
70°
12
84°
64°
13
78°
63°
14
78°
58°
15
78°
55°
16
81°
55°
17
92°
58°
18
78°
60°
19
84°
57°
20
85°
65°
21
84°
66°
22
71°
60°
23
82°
66°
24
81°
67°
25
80°
69°
26
79°
68°
27
86°
71°
28
92°
71°
29
93°
74°
30
92°
73°
1
93°
71°
2
92°
73°
3
92°
69°
4
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Lake St. Louis
Lake St. Louis's June 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 66° and 74°. The average high for June is 88° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Lake St. Louis. See also: July | August | September.
