S
M
T
W
T
F
S
26
85°
73°
27
88°
74°
28
90°
74°
29
86°
73°
30
89°
73°
31
90°
74°
1
89°
72°
2
90°
73°
3
90°
74°
4
91°
73°
5
90°
73°
6
85°
72°
7
87°
73°
8
87°
72°
9
84°
69°
10
83°
67°
11
83°
67°
12
84°
71°
13
84°
71°
14
85°
70°
15
86°
71°
16
86°
70°
17
90°
65°
18
84°
65°
19
86°
69°
20
85°
70°
21
89°
70°
22
88°
70°
23
89°
70°
24
88°
69°
25
88°
69°
26
83°
68°
27
83°
66°
28
84°
67°
29
82°
67°
30
82°
66°
31
83°
68°
1
87°
68°
2
87°
68°
3
86°
67°
4
86°
62°
5
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grafton
Grafton's August 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 62° and 74°. The average high for August is 86° with an average low of 70°. 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 Grafton. See also: September | October | November.
