S
M
T
W
T
F
S
30
90°
74°
31
92°
75°
1
91°
76°
2
90°
75°
3
90°
75°
4
91°
74°
5
91°
74°
6
90°
75°
7
91°
76°
8
92°
76°
9
91°
75°
10
89°
75°
11
89°
74°
12
90°
74°
13
90°
73°
14
89°
73°
15
91°
75°
16
91°
75°
17
92°
74°
18
91°
75°
19
91°
75°
20
90°
73°
21
91°
74°
22
90°
75°
23
90°
73°
24
89°
73°
25
87°
74°
26
87°
72°
27
88°
72°
28
87°
71°
29
86°
73°
30
86°
73°
1
89°
71°
2
88°
69°
3
86°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Longwood
Longwood's September 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 68° and 76°. The average high for September is 90° 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 Longwood. See also: October | November | December.
