S
M
T
W
T
F
S
28
93°
74°
29
94°
74°
30
96°
73°
1
96°
72°
2
93°
73°
3
91°
69°
4
92°
70°
5
93°
69°
6
90°
68°
7
86°
68°
8
89°
68°
9
91°
67°
10
90°
67°
11
88°
65°
12
90°
68°
13
91°
64°
14
84°
62°
15
84°
62°
16
85°
63°
17
88°
66°
18
91°
69°
19
92°
69°
20
90°
68°
21
88°
69°
22
87°
70°
23
92°
70°
24
91°
69°
25
92°
69°
26
91°
70°
27
92°
70°
28
91°
69°
29
93°
70°
30
93°
70°
31
92°
69°
1
92°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Sullivan
Sullivan's July 2026 forecast shows daily high temperatures ranging from 84° to 96°, with overnight lows between 62° and 74°. The average high for July is 91° with an average low of 69°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Sullivan. See also: August | September | October.