S
M
T
W
T
F
S
30
71°
58°
31
73°
58°
1
71°
56°
2
71°
57°
3
74°
56°
4
70°
58°
5
69°
58°
6
69°
54°
7
74°
58°
8
74°
58°
9
75°
59°
10
75°
59°
11
74°
58°
12
74°
57°
13
70°
58°
14
68°
56°
15
69°
54°
16
72°
57°
17
75°
59°
18
76°
58°
19
75°
57°
20
75°
57°
21
76°
56°
22
75°
57°
23
73°
56°
24
71°
54°
25
74°
56°
26
75°
57°
27
75°
56°
28
74°
56°
29
73°
52°
30
74°
56°
1
72°
53°
2
67°
48°
3
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Elkhorn
Elkhorn's September 2026 forecast shows daily high temperatures ranging from 67° to 76°, with overnight lows between 48° and 59°. The average high for September is 73° with an average low of 56°. 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 Elkhorn. See also: October | November | December.