S
M
T
W
T
F
S
30
86°
70°
31
84°
74°
1
93°
75°
2
83°
73°
3
90°
74°
4
88°
72°
5
80°
71°
6
80°
69°
7
80°
67°
8
82°
64°
9
87°
70°
10
88°
74°
11
79°
70°
12
80°
71°
13
84°
74°
14
79°
69°
15
76°
64°
16
79°
63°
17
83°
71°
18
83°
73°
19
79°
69°
20
84°
66°
21
74°
62°
22
66°
57°
23
65°
57°
24
65°
55°
25
69°
53°
26
70°
53°
27
70°
53°
28
69°
52°
29
70°
55°
30
74°
55°
1
74°
54°
2
70°
53°
3
70°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jacobsville
Jacobsville's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 52° and 66°. The average high for September is 71° 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 Jacobsville. See also: October | November | December.