S
M
T
W
T
F
S
30
76°
68°
31
77°
69°
1
78°
66°
2
75°
62°
3
74°
63°
4
74°
65°
5
75°
65°
6
75°
66°
7
76°
65°
8
75°
64°
9
75°
62°
10
74°
64°
11
75°
66°
12
77°
68°
13
78°
66°
14
79°
64°
15
77°
69°
16
76°
69°
17
75°
68°
18
74°
69°
19
75°
69°
20
74°
68°
21
74°
68°
22
77°
69°
23
77°
69°
24
76°
68°
25
80°
69°
26
80°
68°
27
79°
65°
28
77°
65°
29
75°
66°
30
75°
68°
1
77°
69°
2
80°
68°
3
79°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Old Town
Old Town's September 2026 forecast shows daily high temperatures ranging from 74° to 80°, with overnight lows between 62° and 69°. The average high for September is 76° with an average low of 67°. 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 Old Town. See also: October | November | December.