S
M
T
W
T
F
S
30
52°
43°
31
51°
35°
1
54°
35°
2
54°
39°
3
60°
47°
4
60°
57°
5
58°
48°
6
54°
43°
7
56°
48°
8
57°
48°
9
55°
48°
10
63°
47°
11
53°
45°
12
54°
40°
13
56°
44°
14
55°
41°
15
57°
49°
16
53°
47°
17
51°
44°
18
50°
41°
19
52°
39°
20
48°
38°
21
45°
30°
22
47°
35°
23
49°
30°
24
49°
39°
25
50°
41°
26
50°
39°
27
48°
36°
28
50°
35°
29
46°
34°
30
46°
34°
1
45°
35°
2
43°
29°
3
37°
23°
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 37° to 50°, with overnight lows between 23° and 41°. The average high for September is 47° with an average low of 34°. 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.
