S
M
T
W
T
F
S
26
78°
58°
27
80°
60°
28
81°
59°
29
81°
60°
30
82°
61°
31
82°
61°
1
83°
60°
2
79°
56°
3
76°
53°
4
75°
54°
5
76°
58°
6
76°
59°
7
80°
59°
8
80°
58°
9
82°
60°
10
82°
59°
11
81°
59°
12
82°
58°
13
81°
58°
14
82°
57°
15
83°
59°
16
82°
59°
17
77°
58°
18
82°
60°
19
81°
59°
20
78°
53°
21
82°
50°
22
75°
50°
23
75°
51°
24
76°
52°
25
75°
50°
26
75°
52°
27
76°
50°
28
74°
49°
29
73°
48°
30
73°
47°
31
74°
47°
1
72°
46°
2
72°
49°
3
73°
49°
4
70°
51°
5
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sunapee
Sunapee's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 46° and 61°. The average high for August is 78° with an average low of 55°. 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 Sunapee. See also: September | October | November.
