S
M
T
W
T
F
S
30
76°
54°
31
72°
58°
1
79°
66°
2
66°
61°
3
81°
62°
4
78°
63°
5
75°
57°
6
74°
53°
7
75°
48°
8
77°
48°
9
77°
54°
10
80°
59°
11
74°
52°
12
76°
47°
13
77°
61°
14
N/A
15
71°
50°
16
79°
60°
17
80°
61°
18
77°
50°
19
70°
58°
20
72°
54°
21
67°
50°
22
63°
46°
23
65°
49°
24
63°
48°
25
65°
49°
26
68°
47°
27
67°
45°
28
64°
43°
29
70°
44°
30
64°
42°
1
64°
46°
2
66°
47°
3
68°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Jeffersonville
Jeffersonville's September 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 42° and 61°. The average high for September is 69° with an average low of 49°. 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 Jeffersonville. See also: October | November | December.