S
M
T
W
T
F
S
30
74°
64°
31
73°
65°
1
85°
69°
2
87°
69°
3
84°
66°
4
80°
58°
5
75°
54°
6
76°
54°
7
80°
57°
8
78°
61°
9
85°
65°
10
76°
58°
11
71°
56°
12
74°
57°
13
73°
58°
14
72°
53°
15
73°
63°
16
77°
58°
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 87°, with overnight lows between 46° and 69°. The average high for September is 74° with an average low of 56°. 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.