S
M
T
W
T
F
S
30
72°
66°
31
N/A
1
92°
71°
2
93°
70°
3
85°
65°
4
81°
64°
5
79°
64°
6
79°
60°
7
77°
60°
8
76°
61°
9
80°
62°
10
75°
55°
11
76°
55°
12
79°
60°
13
79°
59°
14
77°
59°
15
78°
60°
16
78°
59°
17
77°
58°
18
72°
58°
19
77°
59°
20
78°
60°
21
78°
60°
22
77°
59°
23
78°
58°
24
76°
57°
25
76°
57°
26
75°
55°
27
76°
56°
28
76°
55°
29
74°
54°
30
72°
54°
1
72°
53°
2
73°
54°
3
74°
53°
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 72° to 93°, with overnight lows between 53° and 71°. The average high for September is 78° with an average low of 59°. 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.