S
M
T
W
T
F
S
30
81°
68°
31
93°
72°
1
97°
75°
2
99°
79°
3
95°
79°
4
95°
77°
5
84°
73°
6
79°
70°
7
80°
62°
8
86°
71°
9
80°
66°
10
78°
60°
11
83°
63°
12
85°
66°
13
81°
62°
14
77°
63°
15
75°
60°
16
75°
58°
17
76°
60°
18
77°
59°
19
76°
57°
20
75°
56°
21
74°
61°
22
70°
60°
23
72°
60°
24
78°
61°
25
79°
61°
26
78°
60°
27
78°
61°
28
79°
61°
29
79°
60°
30
78°
61°
1
76°
57°
2
75°
52°
3
64°
48°
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 64° to 86°, with overnight lows between 48° and 71°. The average high for September is 77° with an average low of 60°. 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.