S
M
T
W
T
F
S
30
93°
72°
31
93°
71°
1
97°
70°
2
99°
76°
3
98°
79°
4
99°
76°
5
98°
73°
6
92°
72°
7
97°
70°
8
101°
73°
9
83°
67°
10
87°
59°
11
90°
64°
12
73°
59°
13
66°
59°
14
85°
59°
15
75°
58°
16
71°
59°
17
80°
65°
18
97°
70°
19
81°
60°
20
65°
59°
21
63°
52°
22
66°
50°
23
65°
53°
24
68°
58°
25
70°
58°
26
69°
54°
27
72°
54°
28
72°
56°
29
71°
52°
30
69°
50°
1
73°
52°
2
72°
47°
3
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lincoln
Lincoln's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 47° and 60°. The average high for September is 69° with an average low of 54°. 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 Lincoln. See also: October | November | December.
