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