S
M
T
W
T
F
S
26
81°
68°
27
84°
68°
28
87°
67°
29
87°
67°
30
85°
66°
31
81°
63°
1
81°
66°
2
86°
68°
3
87°
68°
4
88°
67°
5
87°
69°
6
88°
68°
7
85°
61°
8
86°
64°
9
87°
60°
10
82°
58°
11
80°
59°
12
81°
60°
13
81°
59°
14
82°
60°
15
80°
63°
16
81°
65°
17
83°
61°
18
83°
62°
19
81°
64°
20
81°
65°
21
82°
64°
22
81°
63°
23
82°
59°
24
84°
64°
25
86°
63°
26
86°
63°
27
87°
62°
28
87°
58°
29
84°
63°
30
81°
62°
31
83°
60°
1
79°
56°
2
79°
55°
3
77°
55°
4
77°
53°
5
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sunbury
Sunbury's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 53° and 69°. The average high for August is 83° with an average low of 62°. 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 Sunbury. See also: September | October | November.