S
M
T
W
T
F
S
30
81°
69°
31
88°
71°
1
90°
75°
2
92°
75°
3
92°
75°
4
90°
73°
5
86°
70°
6
79°
61°
7
79°
57°
8
84°
59°
9
82°
69°
10
76°
61°
11
79°
54°
12
84°
62°
13
79°
55°
14
71°
46°
15
91°
61°
16
82°
70°
17
82°
69°
18
75°
64°
19
71°
63°
20
74°
57°
21
66°
56°
22
64°
48°
23
61°
55°
24
64°
52°
25
66°
48°
26
71°
45°
27
73°
45°
28
N/A
29
77°
48°
30
68°
60°
1
87°
62°
2
66°
48°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rochester
Rochester's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Rochester. See also: October | November | December.
