S
M
T
W
T
F
S
31
85°
69°
1
87°
63°
2
82°
65°
3
84°
61°
4
74°
66°
5
86°
66°
6
88°
68°
7
83°
69°
8
88°
71°
9
91°
72°
10
92°
70°
11
78°
59°
12
84°
53°
13
80°
56°
14
74°
51°
15
81°
48°
16
79°
56°
17
83°
64°
18
80°
60°
19
81°
53°
20
75°
51°
21
73°
61°
22
77°
59°
23
77°
58°
24
82°
62°
25
72°
60°
26
80°
63°
27
78°
66°
28
97°
74°
29
97°
71°
30
90°
70°
1
91°
71°
2
91°
71°
3
93°
72°
4
95°
69°
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 90° to 97°, with overnight lows between 69° and 74°. The average high for June is 93° with an average low of 71°. 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.
