S
M
T
W
T
F
S
30
72°
66°
31
71°
66°
1
81°
68°
2
82°
67°
3
85°
66°
4
78°
62°
5
77°
61°
6
72°
59°
7
78°
57°
8
78°
59°
9
75°
69°
10
79°
58°
11
73°
52°
12
78°
55°
13
82°
57°
14
69°
53°
15
73°
57°
16
78°
61°
17
77°
59°
18
71°
53°
19
64°
52°
20
70°
55°
21
60°
49°
22
62°
45°
23
66°
50°
24
66°
49°
25
71°
45°
26
75°
51°
27
76°
54°
28
71°
60°
29
71°
61°
30
74°
56°
1
74°
63°
2
66°
52°
3
62°
48°
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 62° to 62°, with overnight lows between 48° and 48°. The average high for September is 62° with an average low of 48°. 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.
