S
M
T
W
T
F
S
30
74°
63°
31
73°
66°
1
74°
67°
2
74°
67°
3
75°
64°
4
73°
61°
5
74°
62°
6
73°
65°
7
75°
65°
8
77°
66°
9
79°
66°
10
77°
65°
11
76°
65°
12
77°
66°
13
78°
62°
14
71°
59°
15
69°
60°
16
69°
62°
17
70°
60°
18
72°
62°
19
74°
62°
20
75°
60°
21
69°
61°
22
72°
61°
23
76°
60°
24
76°
61°
25
75°
62°
26
76°
61°
27
75°
61°
28
69°
58°
29
74°
51°
30
71°
53°
1
62°
48°
2
62°
52°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in East Harbor State Park
East Harbor State Park's September 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 46° and 67°. The average high for September is 73° with an average low of 61°. 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 East Harbor State Park. See also: October | November | December.
