S
M
T
W
T
F
S
30
82°
61°
31
75°
56°
1
73°
56°
2
73°
57°
3
76°
61°
4
81°
61°
5
81°
62°
6
80°
61°
7
78°
55°
8
80°
61°
9
79°
59°
10
82°
50°
11
76°
53°
12
73°
60°
13
77°
51°
14
80°
46°
15
74°
44°
16
66°
45°
17
67°
47°
18
68°
55°
19
71°
56°
20
74°
55°
21
72°
54°
22
76°
55°
23
76°
54°
24
78°
54°
25
77°
56°
26
77°
55°
27
76°
43°
28
75°
41°
29
63°
42°
30
62°
43°
1
63°
46°
2
64°
42°
3
63°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jackson
Jackson's September 2026 forecast shows daily high temperatures ranging from 62° to 82°, with overnight lows between 41° and 62°. The average high for September is 74° with an average low of 53°. 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 Jackson. See also: October | November | December.