S
M
T
W
T
F
S
30
86°
53°
31
76°
52°
1
76°
54°
2
80°
59°
3
76°
52°
4
75°
60°
5
81°
59°
6
82°
52°
7
78°
51°
8
75°
51°
9
74°
50°
10
73°
57°
11
76°
50°
12
73°
50°
13
72°
49°
14
74°
56°
15
78°
55°
16
76°
47°
17
78°
46°
18
69°
45°
19
68°
47°
20
68°
48°
21
69°
48°
22
66°
46°
23
67°
51°
24
71°
52°
25
71°
51°
26
74°
52°
27
74°
48°
28
73°
42°
29
65°
42°
30
65°
50°
1
64°
52°
2
68°
50°
3
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Ballston Spa
Ballston Spa's September 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 42° and 60°. The average high for September is 73° with an average low of 51°. 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 Ballston Spa. See also: October | November | December.
