S
M
T
W
T
F
S
30
82°
57°
31
82°
57°
1
83°
52°
2
75°
49°
3
74°
50°
4
75°
48°
5
75°
48°
6
78°
55°
7
82°
55°
8
80°
54°
9
77°
54°
10
81°
55°
11
81°
54°
12
82°
54°
13
81°
55°
14
82°
44°
15
73°
44°
16
70°
45°
17
72°
44°
18
72°
42°
19
71°
43°
20
71°
43°
21
78°
45°
22
78°
49°
23
77°
40°
24
77°
39°
25
71°
39°
26
71°
41°
27
74°
47°
28
75°
46°
29
75°
38°
30
69°
37°
1
67°
41°
2
68°
42°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Red Hook
Red Hook's September 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 37° and 57°. The average high for September is 76° with an average low of 47°. 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 Red Hook. See also: October | November | December.