S
M
T
W
T
F
S
30
90°
67°
31
90°
67°
1
89°
66°
2
90°
66°
3
89°
65°
4
89°
65°
5
88°
66°
6
89°
66°
7
88°
65°
8
89°
65°
9
89°
66°
10
88°
65°
11
89°
66°
12
88°
66°
13
88°
65°
14
86°
60°
15
78°
62°
16
86°
62°
17
87°
61°
18
87°
54°
19
75°
50°
20
76°
50°
21
78°
51°
22
82°
53°
23
83°
58°
24
83°
57°
25
81°
58°
26
81°
57°
27
82°
56°
28
81°
53°
29
71°
50°
30
74°
51°
1
79°
54°
2
80°
54°
3
80°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Old Joe
Old Joe's September 2026 forecast shows daily high temperatures ranging from 71° to 90°, with overnight lows between 50° and 67°. The average high for September is 84° with an average low of 60°. 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 Old Joe. See also: October | November | December.