S
M
T
W
T
F
S
30
66°
52°
31
68°
55°
1
71°
56°
2
71°
54°
3
73°
50°
4
70°
52°
5
67°
47°
6
70°
47°
7
64°
48°
8
64°
51°
9
65°
54°
10
68°
48°
11
69°
47°
12
66°
48°
13
68°
49°
14
65°
51°
15
67°
47°
16
66°
48°
17
68°
45°
18
67°
49°
19
Hist. Avg.
62°
46°
20
Hist. Avg.
62°
46°
21
Hist. Avg.
62°
46°
22
Hist. Avg.
62°
46°
23
Hist. Avg.
61°
45°
24
Hist. Avg.
61°
45°
25
Hist. Avg.
61°
45°
26
Hist. Avg.
60°
44°
27
Hist. Avg.
60°
44°
28
Hist. Avg.
60°
44°
29
Hist. Avg.
59°
43°
30
Hist. Avg.
59°
43°
1
Hist. Avg.
59°
43°
2
Hist. Avg.
58°
43°
3
Hist. Avg.
58°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Neils Harbour
Neils Harbour's September 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 45° and 56°. The average high for September is 68° with an average low of 50°. 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 Neils Harbour. See also: October | November | December.