S
M
T
W
T
F
S
31
92°
74°
1
94°
72°
2
90°
71°
3
88°
69°
4
83°
71°
5
83°
70°
6
83°
71°
7
85°
72°
8
89°
70°
9
89°
71°
10
91°
70°
11
90°
71°
12
92°
70°
13
91°
71°
14
92°
70°
15
89°
68°
16
91°
72°
17
90°
69°
18
84°
69°
19
83°
70°
20
84°
72°
21
86°
73°
22
86°
72°
23
87°
68°
24
86°
70°
25
88°
74°
26
88°
74°
27
87°
73°
28
88°
74°
29
89°
74°
30
92°
73°
1
93°
75°
2
94°
75°
3
94°
74°
4
95°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Collinsville
Collinsville's June 2026 forecast shows daily high temperatures ranging from 83° to 95°, with overnight lows between 68° and 76°. The average high for June is 88° with an average low of 72°. 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 Collinsville. See also: July | August | September.
