S
M
T
W
T
F
S
30
81°
63°
31
80°
70°
1
87°
69°
2
73°
66°
3
89°
69°
4
88°
75°
5
82°
68°
6
77°
65°
7
81°
62°
8
82°
60°
9
85°
73°
10
84°
68°
11
80°
65°
12
77°
69°
13
81°
70°
14
84°
69°
15
80°
67°
16
79°
62°
17
78°
63°
18
74°
63°
19
76°
59°
20
72°
60°
21
73°
59°
22
70°
64°
23
70°
63°
24
71°
63°
25
72°
60°
26
75°
59°
27
71°
56°
28
71°
60°
29
75°
62°
30
76°
62°
1
76°
61°
2
74°
62°
3
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in New Brighton
New Brighton's September 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 56° and 73°. The average high for September is 76° with an average low of 63°. 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 Brighton. See also: October | November | December.
