S
M
T
W
T
F
S
30
74°
64°
31
73°
65°
1
85°
69°
2
87°
68°
3
85°
67°
4
77°
61°
5
75°
56°
6
76°
51°
7
80°
57°
8
82°
61°
9
85°
69°
10
81°
54°
11
71°
56°
12
74°
58°
13
75°
58°
14
79°
59°
15
78°
57°
16
77°
43°
17
76°
53°
18
69°
51°
19
74°
54°
20
77°
57°
21
77°
57°
22
76°
56°
23
75°
55°
24
70°
55°
25
75°
54°
26
75°
54°
27
74°
52°
28
64°
52°
29
65°
50°
30
64°
48°
1
62°
46°
2
63°
51°
3
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dansville
Dansville's September 2026 forecast shows daily high temperatures ranging from 62° to 85°, with overnight lows between 43° and 69°. The average high for September is 74° 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 Dansville. See also: October | November | December.