S
M
T
W
T
F
S
30
81°
56°
31
80°
57°
1
78°
61°
2
77°
63°
3
85°
62°
4
86°
62°
5
85°
58°
6
79°
54°
7
81°
59°
8
82°
54°
9
77°
52°
10
77°
53°
11
76°
52°
12
80°
52°
13
78°
58°
14
82°
53°
15
74°
51°
16
73°
54°
17
74°
52°
18
75°
56°
19
78°
48°
20
76°
51°
21
76°
51°
22
79°
48°
23
74°
48°
24
74°
47°
25
75°
49°
26
74°
54°
27
77°
54°
28
77°
53°
29
78°
46°
30
71°
48°
1
71°
53°
2
76°
52°
3
76°
46°
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 71° to 86°, with overnight lows between 46° and 63°. The average high for September is 77° with an average low of 53°. 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.
