S
M
T
W
T
F
S
30
76°
57°
31
77°
57°
1
75°
58°
2
75°
58°
3
74°
59°
4
73°
58°
5
76°
58°
6
75°
57°
7
73°
56°
8
74°
54°
9
72°
56°
10
73°
61°
11
72°
54°
12
72°
54°
13
74°
53°
14
75°
60°
15
74°
60°
16
73°
57°
17
71°
53°
18
70°
52°
19
70°
53°
20
75°
58°
21
72°
53°
22
69°
54°
23
74°
56°
24
73°
57°
25
74°
56°
26
70°
48°
27
71°
50°
28
65°
49°
29
64°
48°
30
66°
48°
1
65°
48°
2
Hist. Avg.
68°
50°
3
Hist. Avg.
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in North Castle
North Castle's September 2026 forecast shows daily high temperatures ranging from 64° to 77°, with overnight lows between 48° and 61°. The average high for September is 72° with an average low of 55°. 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 North Castle. See also: October | November | December.
