S
M
T
W
T
F
S
26
81°
54°
27
82°
59°
28
79°
66°
29
77°
67°
30
76°
64°
31
80°
57°
1
82°
67°
2
79°
69°
3
77°
68°
4
78°
66°
5
77°
66°
6
80°
65°
7
79°
63°
8
80°
62°
9
81°
61°
10
80°
60°
11
79°
58°
12
76°
58°
13
75°
57°
14
79°
58°
15
73°
54°
16
72°
53°
17
72°
58°
18
73°
57°
19
72°
54°
20
71°
53°
21
71°
59°
22
72°
58°
23
71°
55°
24
71°
53°
25
70°
54°
26
71°
53°
27
70°
52°
28
70°
52°
29
69°
50°
30
69°
51°
31
72°
58°
1
74°
59°
2
74°
58°
3
70°
54°
4
69°
51°
5
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in New Preston
New Preston's August 2026 forecast shows daily high temperatures ranging from 68° to 82°, with overnight lows between 50° and 69°. The average high for August is 74° 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 New Preston. See also: September | October | November.