S
M
T
W
T
F
S
31
77°
65°
1
81°
63°
2
81°
54°
3
82°
58°
4
87°
63°
5
84°
66°
6
86°
69°
7
83°
68°
8
84°
66°
9
86°
65°
10
84°
65°
11
84°
67°
12
85°
64°
13
83°
65°
14
84°
63°
15
86°
61°
16
77°
60°
17
77°
60°
18
79°
65°
19
79°
67°
20
80°
68°
21
81°
68°
22
83°
67°
23
81°
65°
24
85°
68°
25
86°
69°
26
88°
69°
27
85°
68°
28
84°
69°
29
82°
69°
30
83°
68°
1
82°
68°
2
82°
70°
3
87°
69°
4
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in O'Fallon Township
O'Fallon Township's June 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 54° and 70°. The average high for June is 83° with an average low of 66°. 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 O'Fallon Township. See also: July | August | September.
