S
M
T
W
T
F
S
30
79°
61°
31
81°
61°
1
81°
55°
2
80°
54°
3
80°
59°
4
79°
59°
5
76°
58°
6
76°
58°
7
73°
57°
8
75°
51°
9
73°
49°
10
71°
56°
11
73°
57°
12
78°
56°
13
77°
57°
14
78°
56°
15
77°
58°
16
71°
49°
17
70°
50°
18
70°
48°
19
Hist. Avg.
73°
50°
20
Hist. Avg.
72°
50°
21
Hist. Avg.
72°
50°
22
Hist. Avg.
71°
49°
23
Hist. Avg.
71°
49°
24
Hist. Avg.
71°
48°
25
Hist. Avg.
70°
48°
26
Hist. Avg.
70°
48°
27
Hist. Avg.
69°
47°
28
Hist. Avg.
69°
47°
29
Hist. Avg.
68°
47°
30
Hist. Avg.
68°
46°
1
Hist. Avg.
68°
46°
2
Hist. Avg.
67°
46°
3
Hist. Avg.
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Jackson
South Jackson's September 2026 forecast shows daily high temperatures ranging from 70° to 81°, with overnight lows between 48° and 61°. The average high for September is 76° with an average low of 55°. 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 South Jackson. See also: October | November | December.