S
M
T
W
T
F
S
30
68°
53°
31
69°
57°
1
72°
53°
2
67°
54°
3
70°
49°
4
69°
53°
5
69°
55°
6
70°
55°
7
71°
54°
8
72°
56°
9
72°
56°
10
71°
52°
11
69°
49°
12
64°
47°
13
64°
49°
14
66°
50°
15
67°
46°
16
67°
45°
17
62°
45°
18
67°
47°
19
67°
45°
20
66°
48°
21
66°
44°
22
62°
46°
23
63°
50°
24
60°
44°
25
59°
51°
26
62°
50°
27
58°
51°
28
59°
50°
29
60°
42°
30
58°
43°
1
58°
46°
2
61°
49°
3
64°
51°
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 58° to 72°, with overnight lows between 42° and 57°. The average high for September is 65° with an average low of 50°. 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.