S
M
T
W
T
F
S
31
73°
44°
1
73°
49°
2
76°
52°
3
78°
46°
4
83°
53°
5
77°
68°
6
81°
59°
7
86°
63°
8
88°
71°
9
83°
70°
10
89°
73°
11
90°
65°
12
87°
64°
13
83°
60°
14
75°
52°
15
77°
54°
16
77°
55°
17
75°
55°
18
76°
56°
19
75°
57°
20
74°
57°
21
78°
61°
22
75°
60°
23
75°
58°
24
78°
61°
25
79°
62°
26
80°
62°
27
80°
57°
28
75°
57°
29
75°
59°
30
77°
61°
1
77°
62°
2
78°
61°
3
78°
61°
4
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Decatur
Decatur's June 2026 forecast shows daily high temperatures ranging from 74° to 90°, with overnight lows between 52° and 73°. The average high for June is 79° with an average low of 60°. 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 Decatur. See also: July | August | September.