S
M
T
W
T
F
S
30
75°
62°
31
70°
61°
1
78°
66°
2
85°
64°
3
85°
66°
4
81°
65°
5
77°
59°
6
76°
55°
7
78°
53°
8
81°
53°
9
77°
62°
10
79°
64°
11
73°
54°
12
80°
48°
13
83°
64°
14
68°
52°
15
72°
46°
16
71°
61°
17
71°
56°
18
69°
44°
19
66°
52°
20
62°
49°
21
61°
48°
22
62°
48°
23
63°
48°
24
64°
47°
25
64°
48°
26
65°
49°
27
67°
49°
28
68°
47°
29
67°
44°
30
61°
45°
1
65°
50°
2
61°
43°
3
59°
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 71°, with overnight lows between 43° and 61°. The average high for September is 65° with an average low of 49°. 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.
