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