S
M
T
W
T
F
S
31
72°
64°
1
86°
66°
2
77°
57°
3
81°
48°
4
86°
52°
5
88°
57°
6
88°
61°
7
90°
66°
8
91°
68°
9
90°
73°
10
91°
73°
11
97°
72°
12
99°
73°
13
97°
75°
14
99°
73°
15
91°
73°
16
82°
72°
17
88°
72°
18
N/A
19
88°
67°
20
90°
67°
21
94°
72°
22
94°
72°
23
90°
73°
24
88°
70°
25
90°
71°
26
91°
72°
27
92°
70°
28
91°
69°
29
90°
69°
30
88°
71°
1
92°
68°
2
89°
71°
3
90°
72°
4
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Saint Charles
Saint Charles's June 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 67° and 73°. The average high for June is 91° 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 Saint Charles. See also: July | August | September.
