S
M
T
W
T
F
S
31
92°
73°
1
86°
75°
2
88°
70°
3
80°
73°
4
82°
72°
5
83°
73°
6
85°
74°
7
88°
75°
8
90°
75°
9
91°
74°
10
89°
73°
11
88°
75°
12
88°
74°
13
87°
75°
14
88°
74°
15
87°
74°
16
90°
73°
17
87°
75°
18
89°
76°
19
90°
76°
20
88°
75°
21
89°
76°
22
88°
76°
23
89°
75°
24
90°
76°
25
90°
76°
26
91°
75°
27
88°
76°
28
89°
76°
29
90°
77°
30
90°
76°
1
92°
77°
2
89°
76°
3
88°
74°
4
87°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Saint Charles
Saint Charles's June 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 72° and 77°. The average high for June is 88° with an average low of 75°. 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 Saint Charles. See also: July | August | September.
