S
M
T
W
T
F
S
30
77°
54°
31
80°
58°
1
83°
54°
2
76°
53°
3
77°
56°
4
81°
60°
5
82°
61°
6
82°
59°
7
78°
58°
8
76°
55°
9
81°
59°
10
81°
58°
11
75°
59°
12
80°
59°
13
79°
55°
14
73°
49°
15
72°
50°
16
73°
49°
17
73°
54°
18
77°
56°
19
79°
56°
20
80°
57°
21
72°
51°
22
77°
54°
23
72°
56°
24
78°
50°
25
73°
46°
26
70°
53°
27
69°
47°
28
Hist. Avg.
72°
49°
29
Hist. Avg.
72°
49°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
70°
48°
3
Hist. Avg.
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Old Town
Old Town's September 2026 forecast shows daily high temperatures ranging from 69° to 83°, with overnight lows between 46° and 61°. The average high for September is 77° with an average low of 55°. 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.