S
M
T
W
T
F
S
30
88°
61°
31
82°
64°
1
86°
58°
2
79°
56°
3
78°
61°
4
85°
64°
5
86°
64°
6
87°
61°
7
86°
62°
8
82°
63°
9
80°
58°
10
81°
54°
11
76°
55°
12
78°
57°
13
77°
61°
14
81°
61°
15
79°
60°
16
82°
60°
17
79°
50°
18
77°
48°
19
73°
50°
20
72°
51°
21
73°
57°
22
78°
60°
23
79°
60°
24
80°
56°
25
81°
48°
26
77°
49°
27
69°
47°
28
68°
46°
29
69°
47°
30
70°
46°
1
Hist. Avg.
74°
48°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
74°
48°
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 68° to 88°, with overnight lows between 46° and 64°. The average high for September is 79° with an average low of 56°. 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.