S
M
T
W
T
F
S
30
90°
72°
31
91°
74°
1
90°
72°
2
87°
70°
3
86°
70°
4
88°
72°
5
90°
73°
6
89°
72°
7
90°
73°
8
89°
72°
9
90°
72°
10
89°
71°
11
89°
72°
12
88°
71°
13
89°
71°
14
84°
70°
15
85°
71°
16
84°
71°
17
86°
69°
18
85°
66°
19
83°
68°
20
83°
69°
21
85°
66°
22
84°
67°
23
84°
66°
24
85°
65°
25
86°
68°
26
85°
67°
27
86°
66°
28
84°
67°
29
83°
65°
30
84°
65°
1
84°
66°
2
Hist. Avg.
82°
63°
3
Hist. Avg.
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Georgetown
Georgetown's September 2026 forecast shows daily high temperatures ranging from 83° to 91°, with overnight lows between 65° and 74°. The average high for September is 87° with an average low of 69°. 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 Georgetown. See also: October | November | December.
