S
M
T
W
T
F
S
30
90°
68°
31
86°
64°
1
82°
61°
2
88°
66°
3
90°
72°
4
88°
70°
5
82°
66°
6
73°
68°
7
79°
69°
8
83°
58°
9
77°
51°
10
82°
61°
11
84°
54°
12
75°
57°
13
67°
53°
14
71°
48°
15
68°
52°
16
73°
55°
17
72°
56°
18
71°
52°
19
67°
51°
20
72°
50°
21
70°
55°
22
74°
56°
23
74°
57°
24
76°
56°
25
72°
55°
26
71°
56°
27
75°
56°
28
73°
55°
29
71°
55°
30
71°
52°
1
61°
47°
2
59°
43°
3
59°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Ulm
New Ulm's September 2026 forecast shows daily high temperatures ranging from 59° to 84°, with overnight lows between 41° and 69°. The average high for September is 72° with an average low of 54°. 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 New Ulm. See also: October | November | December.
