S
M
T
W
T
F
S
30
94°
64°
31
95°
71°
1
99°
74°
2
100°
73°
3
99°
73°
4
99°
74°
5
101°
74°
6
94°
75°
7
89°
66°
8
95°
77°
9
100°
78°
10
93°
69°
11
87°
68°
12
92°
70°
13
96°
71°
14
95°
72°
15
88°
66°
16
84°
64°
17
85°
62°
18
81°
60°
19
77°
60°
20
78°
59°
21
81°
58°
22
84°
63°
23
84°
63°
24
83°
64°
25
85°
65°
26
85°
64°
27
84°
64°
28
84°
63°
29
83°
64°
30
84°
63°
1
80°
58°
2
71°
53°
3
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lilbourn
Lilbourn's September 2026 forecast shows daily high temperatures ranging from 70° to 100°, with overnight lows between 50° and 78°. The average high for September is 85° with an average low of 64°. 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 Lilbourn. See also: October | November | December.