S
M
T
W
T
F
S
30
79°
66°
31
82°
69°
1
84°
70°
2
85°
71°
3
84°
70°
4
80°
69°
5
79°
64°
6
79°
57°
7
79°
56°
8
76°
70°
9
76°
63°
10
73°
55°
11
74°
60°
12
75°
61°
13
75°
60°
14
75°
65°
15
70°
55°
16
68°
53°
17
69°
55°
18
65°
51°
19
65°
51°
20
66°
50°
21
64°
49°
22
66°
53°
23
67°
55°
24
71°
54°
25
73°
55°
26
72°
53°
27
72°
54°
28
73°
55°
29
73°
56°
30
72°
56°
1
72°
52°
2
71°
48°
3
59°
45°
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 59° to 76°, with overnight lows between 45° and 70°. The average high for September is 70° 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 Whitehall. See also: October | November | December.