S
M
T
W
T
F
S
26
81°
48°
27
79°
55°
28
80°
71°
29
77°
66°
30
75°
63°
31
83°
58°
1
82°
72°
2
82°
72°
3
78°
64°
4
83°
57°
5
82°
54°
6
84°
76°
7
88°
70°
8
86°
66°
9
91°
66°
10
86°
63°
11
86°
64°
12
85°
66°
13
84°
67°
14
83°
65°
15
79°
57°
16
80°
54°
17
78°
68°
18
78°
65°
19
85°
67°
20
85°
66°
21
74°
66°
22
74°
70°
23
78°
67°
24
78°
64°
25
77°
65°
26
79°
69°
27
77°
67°
28
78°
65°
29
79°
63°
30
78°
65°
31
77°
64°
1
78°
64°
2
79°
62°
3
73°
66°
4
76°
66°
5
73°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Southold
Southold's August 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 62° and 70°. The average high for August is 77° with an average low of 65°. 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 Southold. See also: September | October | November.
