S
M
T
W
T
F
S
30
95°
71°
31
96°
73°
1
96°
75°
2
98°
75°
3
96°
72°
4
91°
73°
5
88°
73°
6
93°
73°
7
93°
73°
8
91°
70°
9
90°
71°
10
93°
72°
11
95°
70°
12
92°
68°
13
90°
69°
14
88°
68°
15
90°
69°
16
86°
65°
17
83°
68°
18
84°
68°
19
87°
67°
20
86°
68°
21
88°
68°
22
88°
67°
23
87°
67°
24
87°
66°
25
85°
67°
26
81°
65°
27
79°
61°
28
78°
57°
29
77°
56°
30
77°
56°
1
78°
57°
2
81°
57°
3
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Natchez
Natchez's September 2026 forecast shows daily high temperatures ranging from 76° to 96°, with overnight lows between 55° and 73°. The average high for September is 86° with an average low of 66°. 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 Natchez. See also: October | November | December.