S
M
T
W
T
F
S
30
88°
63°
31
88°
63°
1
87°
62°
2
87°
63°
3
86°
63°
4
86°
62°
5
83°
61°
6
81°
59°
7
80°
61°
8
83°
60°
9
85°
58°
10
82°
62°
11
85°
60°
12
84°
59°
13
84°
58°
14
83°
59°
15
85°
59°
16
76°
52°
17
80°
57°
18
76°
53°
19
Hist. Avg.
81°
55°
20
Hist. Avg.
80°
54°
21
Hist. Avg.
80°
54°
22
Hist. Avg.
79°
54°
23
Hist. Avg.
79°
53°
24
Hist. Avg.
79°
53°
25
Hist. Avg.
78°
52°
26
Hist. Avg.
78°
52°
27
Hist. Avg.
78°
51°
28
Hist. Avg.
77°
51°
29
Hist. Avg.
77°
50°
30
Hist. Avg.
76°
50°
1
Hist. Avg.
76°
50°
2
Hist. Avg.
76°
49°
3
Hist. Avg.
75°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Omaha
Omaha's September 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 52° and 63°. The average high for September is 83° with an average low of 60°. 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 Omaha. See also: October | November | December.