S
M
T
W
T
F
S
26
89°
64°
27
86°
61°
28
86°
63°
29
87°
66°
30
86°
68°
31
92°
63°
1
88°
65°
2
86°
67°
3
87°
62°
4
85°
64°
5
87°
62°
6
87°
62°
7
Hist. Avg.
89°
67°
8
Hist. Avg.
89°
67°
9
Hist. Avg.
89°
66°
10
Hist. Avg.
89°
66°
11
Hist. Avg.
89°
66°
12
Hist. Avg.
88°
66°
13
Hist. Avg.
88°
65°
14
Hist. Avg.
88°
65°
15
Hist. Avg.
88°
65°
16
Hist. Avg.
88°
65°
17
Hist. Avg.
88°
64°
18
Hist. Avg.
87°
64°
19
Hist. Avg.
87°
64°
20
Hist. Avg.
87°
64°
21
Hist. Avg.
87°
63°
22
Hist. Avg.
87°
63°
23
Hist. Avg.
86°
63°
24
Hist. Avg.
86°
63°
25
Hist. Avg.
86°
62°
26
Hist. Avg.
86°
62°
27
Hist. Avg.
85°
62°
28
Hist. Avg.
85°
61°
29
Hist. Avg.
85°
61°
30
Hist. Avg.
85°
61°
31
Hist. Avg.
84°
60°
1
Hist. Avg.
84°
60°
2
Hist. Avg.
84°
60°
3
Hist. Avg.
83°
60°
4
Hist. Avg.
83°
59°
5
Hist. Avg.
83°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Sullivan
Sullivan's August 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 61° and 68°. The average high for August is 87° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Sullivan. See also: September | October | November.
