S
M
T
W
T
F
S
26
85°
67°
27
85°
67°
28
84°
66°
29
84°
65°
30
82°
62°
31
75°
58°
1
74°
58°
2
75°
59°
3
76°
59°
4
78°
64°
5
78°
63°
6
79°
65°
7
77°
65°
8
78°
64°
9
77°
63°
10
77°
56°
11
76°
56°
12
81°
64°
13
82°
65°
14
85°
66°
15
83°
64°
16
78°
66°
17
84°
64°
18
82°
63°
19
78°
56°
20
75°
54°
21
75°
54°
22
76°
55°
23
76°
55°
24
78°
56°
25
80°
55°
26
81°
58°
27
82°
58°
28
82°
60°
29
80°
59°
30
79°
60°
31
81°
57°
1
81°
51°
2
73°
50°
3
72°
53°
4
77°
59°
5
79°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Willsboro
Willsboro's August 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 50° and 67°. The average high for August is 79° with an average low of 60°. 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 Willsboro. See also: September | October | November.