S
M
T
W
T
F
S
30
67°
60°
31
73°
60°
1
82°
59°
2
74°
59°
3
70°
58°
4
62°
58°
5
66°
59°
6
71°
58°
7
71°
59°
8
71°
61°
9
72°
55°
10
73°
52°
11
74°
58°
12
65°
51°
13
63°
46°
14
58°
40°
15
64°
48°
16
59°
47°
17
66°
46°
18
55°
50°
19
62°
52°
20
58°
45°
21
56°
46°
22
58°
40°
23
N/A
24
N/A
25
66°
51°
26
62°
52°
27
69°
52°
28
N/A
29
61°
54°
30
71°
58°
1
64°
43°
2
60°
41°
3
54°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cornucopia
Cornucopia's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Cornucopia. See also: October | November | December.