S
M
T
W
T
F
S
30
63°
54°
31
64°
49°
1
60°
49°
2
61°
46°
3
61°
50°
4
65°
51°
5
58°
46°
6
62°
43°
7
72°
46°
8
70°
54°
9
67°
48°
10
62°
41°
11
68°
46°
12
69°
51°
13
67°
53°
14
66°
47°
15
71°
51°
16
66°
48°
17
62°
46°
18
64°
46°
19
67°
47°
20
69°
49°
21
67°
50°
22
65°
53°
23
66°
50°
24
65°
52°
25
66°
51°
26
60°
49°
27
60°
50°
28
61°
44°
29
56°
43°
30
56°
43°
1
55°
42°
2
56°
42°
3
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hornburg
Hornburg's September 2026 forecast shows daily high temperatures ranging from 55° to 71°, with overnight lows between 41° and 53°. The average high for September is 64° with an average low of 47°. 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 Hornburg. See also: October | November | December.