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