S
M
T
W
T
F
S
30
73°
53°
31
67°
50°
1
65°
50°
2
64°
51°
3
64°
49°
4
65°
50°
5
63°
49°
6
63°
49°
7
64°
51°
8
66°
54°
9
63°
50°
10
62°
49°
11
62°
50°
12
63°
48°
13
62°
51°
14
63°
52°
15
60°
48°
16
61°
47°
17
59°
46°
18
60°
47°
19
64°
50°
20
Hist. Avg.
70°
49°
21
Hist. Avg.
70°
49°
22
Hist. Avg.
69°
48°
23
Hist. Avg.
69°
48°
24
Hist. Avg.
69°
48°
25
Hist. Avg.
68°
48°
26
Hist. Avg.
68°
47°
27
Hist. Avg.
67°
47°
28
Hist. Avg.
67°
46°
29
Hist. Avg.
66°
46°
30
Hist. Avg.
66°
46°
1
Hist. Avg.
65°
46°
2
Hist. Avg.
65°
45°
3
Hist. Avg.
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cooperstown
Cooperstown's September 2026 forecast shows daily high temperatures ranging from 59° to 73°, with overnight lows between 46° and 54°. The average high for September is 63° with an average low of 50°. 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 Cooperstown. See also: October | November | December.
