S
M
T
W
T
F
S
30
96°
74°
31
95°
74°
1
92°
76°
2
97°
78°
3
90°
80°
4
93°
78°
5
95°
75°
6
91°
78°
7
96°
75°
8
96°
77°
9
92°
76°
10
91°
74°
11
90°
76°
12
94°
75°
13
94°
76°
14
94°
75°
15
94°
74°
16
91°
75°
17
92°
75°
18
93°
72°
19
91°
72°
20
91°
71°
21
89°
70°
22
88°
71°
23
89°
69°
24
90°
73°
25
91°
72°
26
89°
71°
27
85°
72°
28
87°
72°
29
88°
71°
30
90°
71°
1
88°
70°
2
87°
70°
3
87°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Missouri City
Missouri City's September 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 69° and 76°. The average high for September is 90° 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 Missouri City. See also: October | November | December.