S
M
T
W
T
F
S
30
86°
65°
31
83°
60°
1
81°
59°
2
81°
59°
3
82°
65°
4
85°
65°
5
87°
61°
6
80°
61°
7
82°
64°
8
84°
62°
9
79°
57°
10
80°
59°
11
82°
56°
12
78°
55°
13
77°
56°
14
76°
55°
15
77°
56°
16
78°
55°
17
81°
59°
18
82°
60°
19
81°
54°
20
80°
53°
21
75°
53°
22
Hist. Avg.
78°
52°
23
Hist. Avg.
77°
52°
24
Hist. Avg.
77°
52°
25
Hist. Avg.
76°
51°
26
Hist. Avg.
76°
51°
27
Hist. Avg.
76°
50°
28
Hist. Avg.
75°
50°
29
Hist. Avg.
75°
50°
30
Hist. Avg.
75°
49°
1
Hist. Avg.
74°
49°
2
Hist. Avg.
74°
48°
3
Hist. Avg.
74°
48°
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 75° to 87°, with overnight lows between 53° and 65°. The average high for September is 81° 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.
