S
M
T
W
T
F
S
31
76°
52°
1
77°
49°
2
76°
48°
3
80°
55°
4
82°
62°
5
83°
62°
6
80°
62°
7
80°
61°
8
78°
62°
9
80°
60°
10
81°
62°
11
81°
58°
12
79°
58°
13
78°
59°
14
80°
57°
15
73°
53°
16
72°
53°
17
73°
54°
18
76°
61°
19
80°
59°
20
80°
62°
21
78°
61°
22
81°
63°
23
81°
63°
24
79°
60°
25
77°
63°
26
84°
64°
27
82°
60°
28
76°
57°
29
76°
58°
30
77°
57°
1
81°
64°
2
84°
65°
3
84°
64°
4
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Sullivan
Sullivan's June 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 48° and 65°. The average high for June is 79° 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 Sullivan. See also: July | August | September.