S
M
T
W
T
F
S
30
90°
67°
31
92°
71°
1
93°
71°
2
95°
71°
3
97°
71°
4
98°
72°
5
93°
70°
6
85°
64°
7
86°
59°
8
88°
72°
9
91°
72°
10
81°
64°
11
82°
63°
12
85°
64°
13
88°
66°
14
88°
68°
15
87°
61°
16
81°
59°
17
79°
56°
18
79°
55°
19
76°
54°
20
77°
52°
21
76°
55°
22
76°
60°
23
80°
59°
24
82°
60°
25
82°
61°
26
81°
60°
27
82°
60°
28
80°
59°
29
81°
60°
30
81°
59°
1
80°
57°
2
78°
49°
3
67°
46°
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 67° to 91°, with overnight lows between 46° and 72°. The average high for September is 81° with an average low of 60°. 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.
