S
M
T
W
T
F
S
30
76°
60°
31
77°
59°
1
71°
64°
2
70°
64°
3
83°
64°
4
83°
60°
5
76°
59°
6
73°
52°
7
80°
49°
8
79°
52°
9
77°
59°
10
82°
65°
11
75°
52°
12
77°
48°
13
76°
62°
14
71°
50°
15
71°
45°
16
74°
59°
17
70°
64°
18
76°
47°
19
65°
50°
20
59°
50°
21
65°
42°
22
61°
39°
23
66°
44°
24
66°
47°
25
68°
49°
26
67°
48°
27
69°
48°
28
71°
50°
29
70°
52°
30
71°
52°
1
72°
46°
2
69°
48°
3
64°
50°
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 59° to 76°, with overnight lows between 39° and 52°. The average high for September is 67° with an average low of 48°. 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.
