S
M
T
W
T
F
S
30
81°
74°
31
88°
75°
1
87°
77°
2
86°
78°
3
87°
76°
4
N/A
5
87°
75°
6
89°
76°
7
89°
75°
8
87°
74°
9
87°
75°
10
88°
76°
11
85°
78°
12
86°
79°
13
88°
80°
14
85°
78°
15
87°
78°
16
86°
79°
17
88°
78°
18
88°
78°
19
89°
77°
20
89°
77°
21
90°
78°
22
88°
78°
23
89°
79°
24
89°
79°
25
88°
78°
26
88°
79°
27
89°
79°
28
90°
78°
29
89°
79°
30
90°
79°
1
89°
80°
2
90°
80°
3
89°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Zone III
Zone III's September 2026 forecast shows daily high temperatures ranging from 85° to 90°, with overnight lows between 74° and 80°. The average high for September is 88° with an average low of 78°. 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 Zone III. See also: October | November | December.
