S
M
T
W
T
F
S
30
95°
73°
31
96°
73°
1
95°
75°
2
96°
75°
3
98°
75°
4
95°
74°
5
96°
73°
6
98°
74°
7
100°
74°
8
95°
74°
9
96°
74°
10
96°
72°
11
90°
75°
12
96°
73°
13
98°
76°
14
98°
74°
15
98°
72°
16
97°
74°
17
95°
72°
18
97°
68°
19
98°
71°
20
97°
75°
21
98°
75°
22
96°
74°
23
91°
72°
24
84°
63°
25
89°
64°
26
89°
64°
27
N/A
28
90°
61°
29
94°
66°
30
93°
71°
1
91°
72°
2
86°
73°
3
82°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Jackson
Jackson's September 2026 forecast shows daily high temperatures ranging from 82° to 94°, with overnight lows between 61° and 73°. The average high for September is 89° with an average low of 69°. 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.