S
M
T
W
T
F
S
30
89°
73°
31
90°
74°
1
90°
74°
2
89°
73°
3
89°
74°
4
88°
75°
5
89°
74°
6
88°
74°
7
88°
73°
8
87°
73°
9
89°
74°
10
87°
73°
11
86°
73°
12
87°
74°
13
88°
73°
14
89°
72°
15
88°
70°
16
85°
71°
17
86°
73°
18
88°
72°
19
87°
71°
20
86°
72°
21
86°
73°
22
87°
73°
23
85°
72°
24
85°
72°
25
84°
70°
26
85°
72°
27
83°
72°
28
84°
71°
29
85°
70°
30
84°
72°
1
85°
70°
2
86°
69°
3
85°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Space Center
Space Center's September 2026 forecast shows daily high temperatures ranging from 83° to 90°, with overnight lows between 69° and 75°. The average high for September is 87° with an average low of 72°. 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 Space Center. See also: October | November | December.