S
M
T
W
T
F
S
30
82°
56°
31
77°
53°
1
76°
55°
2
76°
55°
3
77°
56°
4
76°
54°
5
75°
54°
6
74°
60°
7
75°
57°
8
76°
55°
9
75°
53°
10
75°
52°
11
73°
52°
12
73°
53°
13
74°
54°
14
73°
53°
15
74°
57°
16
76°
54°
17
77°
52°
18
77°
49°
19
Hist. Avg.
75°
52°
20
Hist. Avg.
75°
52°
21
Hist. Avg.
74°
51°
22
Hist. Avg.
74°
51°
23
Hist. Avg.
74°
50°
24
Hist. Avg.
73°
50°
25
Hist. Avg.
73°
50°
26
Hist. Avg.
72°
49°
27
Hist. Avg.
72°
49°
28
Hist. Avg.
72°
49°
29
Hist. Avg.
71°
48°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
70°
48°
2
Hist. Avg.
70°
47°
3
Hist. Avg.
70°
47°
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 73° to 82°, with overnight lows between 49° and 60°. The average high for September is 76° with an average low of 54°. 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.
