S
M
T
W
T
F
S
30
98°
77°
31
100°
78°
1
101°
75°
2
104°
75°
3
97°
81°
4
96°
79°
5
101°
76°
6
97°
80°
7
100°
78°
8
100°
79°
9
100°
79°
10
99°
79°
11
102°
78°
12
100°
79°
13
100°
79°
14
100°
79°
15
101°
80°
16
99°
78°
17
98°
76°
18
97°
73°
19
96°
75°
20
97°
76°
21
98°
75°
22
94°
75°
23
95°
73°
24
96°
71°
25
95°
70°
26
94°
69°
27
92°
68°
28
93°
69°
29
91°
69°
30
92°
68°
1
92°
66°
2
86°
62°
3
86°
65°
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 86° to 98°, with overnight lows between 62° and 76°. The average high for September is 93° with an average low of 70°. 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.
