S
M
T
W
T
F
S
26
85°
69°
27
85°
69°
28
83°
68°
29
81°
69°
30
79°
69°
31
85°
68°
1
84°
69°
2
85°
68°
3
85°
68°
4
86°
69°
5
84°
67°
6
81°
68°
7
80°
67°
8
81°
63°
9
80°
63°
10
80°
62°
11
81°
68°
12
83°
68°
13
85°
67°
14
85°
62°
15
80°
62°
16
79°
64°
17
81°
68°
18
78°
62°
19
81°
62°
20
81°
61°
21
82°
62°
22
83°
62°
23
82°
61°
24
82°
60°
25
80°
60°
26
81°
64°
27
82°
65°
28
77°
64°
29
83°
67°
30
83°
64°
31
82°
58°
1
79°
57°
2
75°
58°
3
75°
58°
4
76°
59°
5
75°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Peconic
Peconic's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 57° and 69°. The average high for August is 81° with an average low of 64°. 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 Peconic. See also: September | October | November.