S
M
T
W
T
F
S
30
92°
75°
31
91°
75°
1
90°
76°
2
90°
75°
3
89°
74°
4
89°
73°
5
90°
72°
6
90°
72°
7
93°
76°
8
90°
76°
9
92°
75°
10
93°
76°
11
93°
75°
12
92°
74°
13
91°
73°
14
92°
72°
15
90°
74°
16
87°
71°
17
89°
70°
18
87°
73°
19
Hist. Avg.
89°
71°
20
Hist. Avg.
89°
71°
21
Hist. Avg.
89°
70°
22
Hist. Avg.
89°
70°
23
Hist. Avg.
89°
70°
24
Hist. Avg.
88°
69°
25
Hist. Avg.
88°
69°
26
Hist. Avg.
88°
69°
27
Hist. Avg.
88°
68°
28
Hist. Avg.
88°
68°
29
Hist. Avg.
88°
68°
30
Hist. Avg.
88°
68°
1
Hist. Avg.
87°
67°
2
Hist. Avg.
87°
67°
3
Hist. Avg.
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sugar Land
Sugar Land's September 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 70° and 76°. The average high for September is 91° with an average low of 74°. 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 Sugar Land. See also: October | November | December.