S
M
T
W
T
F
S
30
80°
59°
31
80°
58°
1
79°
53°
2
73°
50°
3
72°
52°
4
72°
50°
5
73°
49°
6
76°
56°
7
79°
57°
8
77°
56°
9
74°
56°
10
78°
55°
11
79°
55°
12
78°
56°
13
79°
57°
14
79°
46°
15
71°
46°
16
67°
47°
17
71°
46°
18
69°
44°
19
68°
45°
20
68°
45°
21
75°
47°
22
75°
51°
23
74°
42°
24
74°
41°
25
69°
41°
26
68°
43°
27
72°
49°
28
72°
48°
29
71°
40°
30
66°
40°
1
64°
43°
2
66°
44°
3
69°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Copake Lake
Copake Lake's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 40° and 59°. The average high for September is 73° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Copake Lake. See also: October | November | December.
