S
M
T
W
T
F
S
30
68°
51°
31
68°
50°
1
69°
53°
2
69°
57°
3
70°
60°
4
72°
61°
5
75°
60°
6
78°
52°
7
75°
51°
8
68°
51°
9
68°
50°
10
67°
54°
11
67°
56°
12
66°
52°
13
67°
55°
14
71°
55°
15
72°
54°
16
68°
57°
17
67°
55°
18
71°
54°
19
71°
49°
20
69°
52°
21
69°
48°
22
70°
45°
23
63°
46°
24
62°
47°
25
62°
48°
26
63°
44°
27
61°
44°
28
61°
47°
29
59°
43°
30
60°
43°
1
59°
45°
2
65°
42°
3
62°
47°
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 59° to 78°, with overnight lows between 42° and 61°. The average high for September is 67° with an average low of 51°. 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.
