S
M
T
W
T
F
S
30
76°
33°
31
73°
36°
1
74°
40°
2
76°
41°
3
74°
41°
4
77°
42°
5
79°
39°
6
67°
36°
7
69°
40°
8
70°
35°
9
68°
38°
10
68°
39°
11
68°
31°
12
66°
32°
13
65°
30°
14
64°
31°
15
67°
33°
16
70°
36°
17
73°
32°
18
74°
39°
19
75°
38°
20
75°
41°
21
74°
40°
22
73°
41°
23
75°
42°
24
76°
41°
25
74°
40°
26
69°
37°
27
64°
35°
28
62°
33°
29
63°
37°
30
59°
37°
1
58°
40°
2
69°
38°
3
58°
29°
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 58° to 79°, with overnight lows between 29° and 42°. The average high for September is 70° with an average low of 37°. 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.
