S
M
T
W
T
F
S
30
83°
63°
31
90°
63°
1
90°
66°
2
88°
64°
3
86°
65°
4
91°
69°
5
82°
60°
6
82°
57°
7
80°
64°
8
76°
66°
9
82°
50°
10
79°
54°
11
81°
56°
12
77°
52°
13
67°
55°
14
71°
50°
15
68°
45°
16
68°
46°
17
71°
52°
18
69°
47°
19
67°
47°
20
70°
46°
21
67°
51°
22
70°
51°
23
72°
50°
24
73°
51°
25
73°
51°
26
71°
50°
27
72°
51°
28
73°
51°
29
70°
50°
30
71°
49°
1
68°
43°
2
58°
40°
3
57°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whitehall
Whitehall's September 2026 forecast shows daily high temperatures ranging from 57° to 82°, with overnight lows between 35° and 66°. The average high for September is 71° 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 Whitehall. See also: October | November | December.