S
M
T
W
T
F
S
31
70°
48°
1
70°
54°
2
79°
53°
3
70°
52°
4
71°
50°
5
71°
50°
6
72°
51°
7
72°
51°
8
73°
53°
9
73°
54°
10
74°
58°
11
77°
60°
12
74°
53°
13
77°
54°
14
83°
56°
15
81°
57°
16
81°
59°
17
82°
61°
18
83°
61°
19
83°
60°
20
80°
62°
21
84°
62°
22
85°
61°
23
85°
63°
24
86°
63°
25
86°
62°
26
85°
63°
27
84°
63°
28
82°
65°
29
86°
66°
30
88°
65°
1
89°
64°
2
87°
65°
3
87°
65°
4
86°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Wheaton
Wheaton's June 2026 forecast shows daily high temperatures ranging from 70° to 89°, with overnight lows between 48° and 66°. The average high for June is 80° with an average low of 59°. 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 Wheaton. See also: July | August | September.