S
M
T
W
T
F
S
30
82°
66°
31
92°
69°
1
91°
68°
2
87°
64°
3
86°
69°
4
87°
70°
5
76°
62°
6
80°
57°
7
78°
61°
8
76°
65°
9
80°
55°
10
77°
54°
11
78°
59°
12
76°
55°
13
70°
52°
14
72°
53°
15
68°
53°
16
75°
52°
17
75°
54°
18
72°
52°
19
69°
48°
20
73°
54°
21
65°
52°
22
68°
53°
23
71°
53°
24
72°
52°
25
72°
52°
26
70°
51°
27
70°
53°
28
72°
54°
29
69°
53°
30
69°
53°
1
66°
46°
2
58°
43°
3
56°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whiting
Whiting's September 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 39° and 65°. The average high for September is 71° with an average low of 53°. 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 Whiting. See also: October | November | December.