S
M
T
W
T
F
S
30
78°
65°
31
84°
69°
1
88°
68°
2
91°
71°
3
87°
66°
4
77°
66°
5
74°
59°
6
78°
55°
7
78°
50°
8
81°
55°
9
76°
67°
10
77°
54°
11
76°
49°
12
83°
61°
13
76°
48°
14
70°
43°
15
78°
58°
16
71°
65°
17
68°
62°
18
75°
53°
19
63°
55°
20
62°
56°
21
63°
48°
22
65°
44°
23
67°
49°
24
70°
42°
25
67°
39°
26
71°
40°
27
73°
41°
28
74°
42°
29
75°
46°
30
67°
52°
1
79°
61°
2
66°
46°
3
65°
40°
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 ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.