S
M
T
W
T
F
S
30
87°
65°
31
89°
61°
1
88°
58°
2
83°
63°
3
84°
56°
4
78°
55°
5
80°
55°
6
82°
61°
7
84°
53°
8
78°
56°
9
80°
60°
10
77°
61°
11
84°
61°
12
86°
60°
13
86°
59°
14
87°
60°
15
86°
60°
16
87°
60°
17
Hist. Avg.
80°
54°
18
Hist. Avg.
80°
53°
19
Hist. Avg.
79°
53°
20
Hist. Avg.
79°
52°
21
Hist. Avg.
78°
52°
22
Hist. Avg.
78°
52°
23
Hist. Avg.
78°
51°
24
Hist. Avg.
77°
51°
25
Hist. Avg.
77°
50°
26
Hist. Avg.
76°
50°
27
Hist. Avg.
76°
49°
28
Hist. Avg.
75°
49°
29
Hist. Avg.
75°
48°
30
Hist. Avg.
74°
48°
1
Hist. Avg.
74°
48°
2
Hist. Avg.
74°
47°
3
Hist. Avg.
73°
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 77° to 89°, with overnight lows between 53° and 65°. The average high for September is 84° with an average low of 59°. 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.