S
M
T
W
T
F
S
30
70°
59°
31
68°
59°
1
68°
57°
2
68°
57°
3
70°
59°
4
64°
59°
5
64°
55°
6
67°
58°
7
70°
61°
8
65°
56°
9
62°
54°
10
63°
54°
11
62°
55°
12
63°
54°
13
64°
54°
14
63°
56°
15
63°
55°
16
65°
56°
17
64°
54°
18
63°
56°
19
64°
55°
20
62°
56°
21
63°
56°
22
63°
57°
23
64°
57°
24
64°
56°
25
63°
55°
26
60°
53°
27
59°
50°
28
59°
51°
29
60°
51°
30
56°
54°
1
61°
53°
2
60°
51°
3
60°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Steinberg
Steinberg's September 2026 forecast shows daily high temperatures ranging from 56° to 70°, with overnight lows between 50° and 61°. The average high for September is 63° with an average low of 55°. 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 Steinberg. See also: October | November | December.
