S
M
T
W
T
F
S
30
85°
63°
31
86°
65°
1
87°
63°
2
88°
63°
3
89°
68°
4
89°
68°
5
88°
67°
6
89°
68°
7
88°
67°
8
86°
66°
9
82°
67°
10
86°
66°
11
87°
65°
12
86°
65°
13
87°
64°
14
86°
65°
15
86°
65°
16
85°
64°
17
85°
59°
18
80°
62°
19
85°
58°
20
79°
56°
21
78°
56°
22
76°
58°
23
78°
61°
24
83°
60°
25
83°
60°
26
84°
58°
27
83°
59°
28
82°
58°
29
81°
57°
30
81°
57°
1
79°
56°
2
81°
58°
3
73°
52°
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 73° to 89°, with overnight lows between 52° and 68°. The average high for September is 84° with an average low of 62°. 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.