S
M
T
W
T
F
S
30
82°
60°
31
83°
60°
1
84°
61°
2
84°
60°
3
83°
53°
4
78°
50°
5
74°
52°
6
75°
58°
7
80°
58°
8
82°
58°
9
81°
58°
10
75°
57°
11
80°
56°
12
80°
57°
13
79°
58°
14
79°
57°
15
80°
56°
16
80°
48°
17
76°
55°
18
77°
52°
19
74°
48°
20
72°
46°
21
68°
44°
22
67°
51°
23
69°
49°
24
68°
45°
25
66°
44°
26
66°
44°
27
68°
49°
28
73°
50°
29
74°
47°
30
68°
46°
1
65°
48°
2
65°
41°
3
65°
42°
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 65° to 84°, with overnight lows between 41° and 61°. The average high for September is 75° 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 Ballston Spa. See also: October | November | December.
