S
M
T
W
T
F
S
30
81°
50°
31
77°
45°
1
73°
49°
2
70°
58°
3
67°
60°
4
82°
56°
5
73°
53°
6
74°
47°
7
82°
43°
8
80°
49°
9
68°
49°
10
85°
59°
11
74°
42°
12
73°
36°
13
66°
48°
14
71°
42°
15
71°
37°
16
67°
59°
17
68°
62°
18
78°
47°
19
63°
49°
20
63°
50°
21
65°
46°
22
62°
47°
23
62°
45°
24
63°
48°
25
68°
49°
26
66°
48°
27
69°
49°
28
67°
48°
29
66°
44°
30
60°
46°
1
59°
47°
2
67°
47°
3
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kennebunkport
Kennebunkport's September 2026 forecast shows daily high temperatures ranging from 59° to 78°, with overnight lows between 44° and 62°. 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 Kennebunkport. See also: October | November | December.
