S
M
T
W
T
F
S
30
90°
71°
31
90°
71°
1
94°
68°
2
96°
71°
3
95°
73°
4
98°
73°
5
99°
74°
6
96°
72°
7
85°
72°
8
88°
72°
9
90°
69°
10
93°
68°
11
89°
72°
12
83°
69°
13
88°
69°
14
91°
70°
15
90°
71°
16
88°
67°
17
89°
67°
18
87°
62°
19
84°
61°
20
82°
59°
21
80°
58°
22
80°
59°
23
81°
61°
24
82°
57°
25
85°
62°
26
84°
61°
27
84°
60°
28
83°
60°
29
85°
61°
30
85°
60°
1
83°
60°
2
83°
59°
3
82°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Leesburg
Leesburg's September 2026 forecast shows daily high temperatures ranging from 80° to 91°, with overnight lows between 57° and 72°. The average high for September is 85° with an average low of 63°. 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 Leesburg. See also: October | November | December.