S
M
T
W
T
F
S
30
76°
58°
31
75°
57°
1
75°
58°
2
76°
57°
3
73°
59°
4
76°
56°
5
75°
57°
6
70°
52°
7
77°
58°
8
78°
57°
9
76°
59°
10
73°
58°
11
72°
55°
12
75°
58°
13
76°
54°
14
69°
50°
15
71°
51°
16
75°
55°
17
76°
56°
18
76°
50°
19
72°
49°
20
66°
46°
21
72°
54°
22
73°
53°
23
74°
51°
24
66°
49°
25
64°
44°
26
64°
44°
27
63°
43°
28
63°
42°
29
64°
42°
30
65°
43°
1
66°
48°
2
65°
44°
3
59°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Schenectady County Airport
Schenectady County Airport's September 2026 forecast shows daily high temperatures ranging from 59° to 78°, with overnight lows between 42° and 59°. The average high for September is 71° with an average low of 52°. 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 Schenectady County Airport. See also: October | November | December.