S
M
T
W
T
F
S
26
82°
56°
27
77°
56°
28
76°
60°
29
77°
56°
30
76°
56°
31
76°
58°
1
77°
58°
2
80°
60°
3
80°
60°
4
79°
59°
5
81°
57°
6
75°
54°
7
75°
56°
8
76°
58°
9
75°
56°
10
75°
56°
11
76°
52°
12
74°
54°
13
77°
59°
14
78°
58°
15
74°
55°
16
74°
53°
17
75°
54°
18
74°
58°
19
74°
59°
20
80°
59°
21
79°
58°
22
80°
58°
23
76°
56°
24
83°
56°
25
79°
55°
26
81°
54°
27
82°
49°
28
74°
48°
29
72°
49°
30
71°
47°
31
70°
46°
1
72°
50°
2
72°
55°
3
71°
57°
4
79°
57°
5
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Sunapee
Mount Sunapee's August 2026 forecast shows daily high temperatures ranging from 70° to 83°, with overnight lows between 46° and 60°. The average high for August is 77° 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 Mount Sunapee. See also: September | October | November.
