S
M
T
W
T
F
S
30
85°
63°
31
86°
63°
1
86°
62°
2
85°
62°
3
86°
55°
4
80°
53°
5
77°
55°
6
78°
61°
7
83°
61°
8
83°
59°
9
84°
60°
10
78°
59°
11
83°
58°
12
83°
60°
13
82°
60°
14
81°
59°
15
83°
59°
16
82°
51°
17
78°
58°
18
80°
54°
19
76°
51°
20
75°
49°
21
70°
47°
22
70°
54°
23
71°
51°
24
71°
48°
25
69°
47°
26
68°
47°
27
70°
53°
28
76°
54°
29
75°
50°
30
70°
49°
1
66°
51°
2
67°
44°
3
67°
46°
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 66° to 86°, with overnight lows between 44° and 63°. The average high for September is 77° with an average low of 55°. 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.