S
M
T
W
T
F
S
30
66°
52°
31
65°
53°
1
66°
52°
2
66°
53°
3
67°
54°
4
69°
54°
5
66°
59°
6
71°
56°
7
71°
52°
8
69°
50°
9
65°
50°
10
64°
54°
11
66°
54°
12
67°
55°
13
66°
54°
14
64°
54°
15
66°
55°
16
67°
54°
17
68°
55°
18
67°
54°
19
67°
55°
20
66°
54°
21
68°
53°
22
67°
48°
23
65°
52°
24
61°
51°
25
62°
49°
26
60°
46°
27
60°
48°
28
58°
45°
29
59°
47°
30
59°
44°
1
58°
44°
2
58°
45°
3
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Harrigan Cove
Harrigan Cove's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 44° and 59°. The average high for September is 65° with an average low of 51°. 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 Harrigan Cove. See also: October | November | December.