S
M
T
W
T
F
S
31
81°
65°
1
80°
61°
2
81°
62°
3
80°
62°
4
77°
63°
5
79°
64°
6
81°
67°
7
83°
68°
8
84°
67°
9
85°
65°
10
85°
68°
11
83°
67°
12
83°
69°
13
84°
69°
14
82°
68°
15
83°
69°
16
82°
69°
17
82°
68°
18
83°
68°
19
81°
67°
20
82°
68°
21
83°
65°
22
83°
69°
23
84°
68°
24
85°
67°
25
84°
68°
26
85°
71°
27
84°
69°
28
85°
71°
29
86°
71°
30
86°
70°
1
87°
72°
2
84°
72°
3
84°
71°
4
85°
68°
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 77° to 87°, with overnight lows between 61° and 72°. The average high for June is 83° with an average low of 68°. 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.