S
M
T
W
T
F
S
30
95°
65°
31
97°
70°
1
97°
72°
2
99°
70°
3
99°
72°
4
100°
72°
5
100°
72°
6
97°
67°
7
92°
68°
8
95°
75°
9
100°
76°
10
91°
69°
11
88°
67°
12
91°
67°
13
93°
64°
14
89°
65°
15
89°
64°
16
90°
66°
17
90°
65°
18
86°
62°
19
82°
56°
20
80°
62°
21
86°
62°
22
84°
61°
23
84°
61°
24
83°
62°
25
85°
62°
26
85°
61°
27
84°
61°
28
83°
60°
29
84°
61°
30
84°
61°
1
81°
55°
2
75°
51°
3
71°
47°
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 71° to 100°, with overnight lows between 47° and 76°. The average high for September is 87° with an average low of 63°. 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.