S
M
T
W
T
F
S
30
77°
55°
31
74°
52°
1
71°
53°
2
71°
51°
3
72°
52°
4
71°
52°
5
70°
53°
6
70°
55°
7
71°
59°
8
70°
53°
9
70°
52°
10
71°
51°
11
69°
53°
12
69°
55°
13
68°
54°
14
69°
53°
15
68°
55°
16
68°
50°
17
69°
49°
18
69°
50°
19
73°
51°
20
Hist. Avg.
69°
50°
21
Hist. Avg.
69°
50°
22
Hist. Avg.
69°
50°
23
Hist. Avg.
69°
50°
24
Hist. Avg.
68°
49°
25
Hist. Avg.
68°
49°
26
Hist. Avg.
68°
49°
27
Hist. Avg.
68°
49°
28
Hist. Avg.
67°
48°
29
Hist. Avg.
67°
48°
30
Hist. Avg.
67°
48°
1
Hist. Avg.
67°
48°
2
Hist. Avg.
66°
47°
3
Hist. Avg.
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lincoln
Lincoln's September 2026 forecast shows daily high temperatures ranging from 68° to 77°, with overnight lows between 49° and 59°. The average high for September is 70° 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 Lincoln. See also: October | November | December.