S
M
T
W
T
F
S
30
91°
75°
31
92°
77°
1
94°
77°
2
93°
77°
3
90°
78°
4
92°
79°
5
91°
80°
6
91°
79°
7
88°
78°
8
89°
78°
9
90°
77°
10
92°
77°
11
92°
76°
12
91°
78°
13
92°
78°
14
93°
79°
15
92°
79°
16
91°
79°
17
93°
77°
18
95°
76°
19
92°
74°
20
87°
73°
21
87°
74°
22
87°
76°
23
88°
75°
24
88°
74°
25
87°
73°
26
88°
71°
27
86°
72°
28
85°
73°
29
85°
73°
30
84°
74°
1
87°
75°
2
86°
72°
3
89°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Palmetto
Palmetto's September 2026 forecast shows daily high temperatures ranging from 84° to 89°, with overnight lows between 71° and 76°. The average high for September is 87° with an average low of 74°. 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 Palmetto. See also: October | November | December.