S
M
T
W
T
F
S
30
89°
72°
31
88°
71°
1
89°
70°
2
88°
67°
3
87°
67°
4
87°
68°
5
88°
67°
6
89°
67°
7
90°
68°
8
91°
71°
9
91°
70°
10
90°
69°
11
91°
68°
12
91°
70°
13
90°
69°
14
91°
69°
15
91°
68°
16
90°
68°
17
88°
69°
18
88°
68°
19
89°
67°
20
89°
67°
21
88°
68°
22
89°
67°
23
87°
66°
24
85°
67°
25
Hist. Avg.
86°
64°
26
Hist. Avg.
86°
64°
27
Hist. Avg.
86°
64°
28
Hist. Avg.
85°
63°
29
Hist. Avg.
85°
63°
30
Hist. Avg.
85°
62°
1
Hist. Avg.
84°
62°
2
Hist. Avg.
84°
61°
3
Hist. Avg.
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Petal
Petal's September 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 66° and 72°. The average high for September is 89° with an average low of 68°. 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 Petal. See also: October | November | December.
