S
M
T
W
T
F
S
30
68°
57°
31
69°
58°
1
71°
59°
2
71°
59°
3
70°
58°
4
70°
57°
5
69°
57°
6
68°
56°
7
66°
56°
8
67°
55°
9
66°
56°
10
65°
55°
11
70°
50°
12
66°
48°
13
65°
50°
14
66°
51°
15
65°
53°
16
63°
52°
17
67°
50°
18
64°
52°
19
66°
49°
20
65°
46°
21
60°
47°
22
58°
52°
23
64°
48°
24
66°
45°
25
64°
51°
26
63°
50°
27
64°
50°
28
61°
49°
29
62°
50°
30
65°
46°
1
64°
50°
2
62°
51°
3
63°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Clark's Harbour
Clark's Harbour's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 45° and 59°. The average high for September is 66° with an average low of 52°. 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 Clark's Harbour. See also: October | November | December.
