S
M
T
W
T
F
S
30
80°
64°
31
82°
64°
1
84°
63°
2
81°
60°
3
78°
59°
4
79°
62°
5
83°
62°
6
83°
61°
7
84°
63°
8
84°
63°
9
83°
62°
10
83°
60°
11
82°
63°
12
84°
62°
13
84°
63°
14
77°
51°
15
71°
54°
16
74°
59°
17
73°
55°
18
72°
50°
19
71°
49°
20
73°
49°
21
74°
53°
22
78°
56°
23
79°
48°
24
71°
47°
25
69°
55°
26
74°
56°
27
77°
55°
28
77°
47°
29
68°
46°
30
67°
45°
1
67°
50°
2
74°
52°
3
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whitestown
Whitestown's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 45° and 64°. The average high for September is 77° with an average low of 56°. 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 Whitestown. See also: October | November | December.
