S
M
T
W
T
F
S
31
79°
47°
1
76°
52°
2
76°
53°
3
76°
55°
4
87°
50°
5
86°
54°
6
93°
62°
7
92°
64°
8
87°
62°
9
92°
62°
10
88°
48°
11
79°
52°
12
81°
54°
13
81°
52°
14
74°
48°
15
75°
50°
16
75°
53°
17
79°
53°
18
84°
57°
19
86°
51°
20
88°
54°
21
83°
52°
22
87°
56°
23
90°
56°
24
91°
57°
25
91°
57°
26
90°
56°
27
85°
55°
28
90°
58°
29
90°
54°
30
91°
58°
1
92°
58°
2
92°
57°
3
89°
59°
4
89°
58°
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 74° to 93°, with overnight lows between 48° and 64°. The average high for June is 86° with an average low of 56°. 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.