S
M
T
W
T
F
S
26
82°
66°
27
83°
66°
28
84°
65°
29
83°
65°
30
81°
64°
31
75°
62°
1
77°
65°
2
84°
66°
3
84°
66°
4
83°
65°
5
84°
64°
6
82°
65°
7
82°
62°
8
82°
56°
9
81°
52°
10
74°
60°
11
75°
55°
12
76°
54°
13
74°
55°
14
74°
58°
15
75°
61°
16
75°
56°
17
76°
54°
18
74°
52°
19
76°
53°
20
79°
53°
21
79°
56°
22
78°
61°
23
81°
60°
24
81°
62°
25
82°
62°
26
81°
57°
27
80°
50°
28
73°
51°
29
73°
50°
30
72°
51°
31
73°
49°
1
72°
50°
2
70°
49°
3
71°
49°
4
75°
54°
5
73°
52°
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 70° to 84°, with overnight lows between 49° and 66°. The average high for August is 78° with an average low of 58°. 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.
