S
M
T
W
T
F
S
30
78°
56°
31
70°
64°
1
86°
66°
2
82°
66°
3
84°
65°
4
79°
61°
5
73°
56°
6
72°
50°
7
74°
51°
8
77°
58°
9
80°
65°
10
72°
51°
11
66°
44°
12
74°
50°
13
73°
56°
14
71°
49°
15
75°
52°
16
73°
48°
17
68°
49°
18
69°
46°
19
71°
44°
20
72°
50°
21
70°
50°
22
63°
50°
23
65°
49°
24
66°
49°
25
69°
48°
26
70°
46°
27
65°
42°
28
69°
48°
29
70°
49°
30
71°
49°
1
70°
48°
2
69°
46°
3
68°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Troy
Troy's September 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 42° and 65°. The average high for September is 71° with an average low of 49°. 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 Troy. See also: October | November | December.