S
M
T
W
T
F
S
30
86°
67°
31
89°
65°
1
N/A
2
84°
68°
3
86°
69°
4
90°
69°
5
89°
69°
6
82°
64°
7
77°
64°
8
76°
62°
9
75°
57°
10
74°
59°
11
73°
52°
12
72°
53°
13
73°
54°
14
72°
51°
15
77°
57°
16
73°
54°
17
74°
57°
18
75°
56°
19
72°
53°
20
74°
55°
21
75°
56°
22
75°
56°
23
74°
55°
24
76°
56°
25
75°
55°
26
74°
55°
27
75°
54°
28
74°
54°
29
73°
53°
30
73°
54°
1
72°
55°
2
73°
52°
3
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Excelsior
Excelsior's September 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 51° and 69°. The average high for September is 76° with an average low of 57°. 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 Excelsior. See also: October | November | December.
