S
M
T
W
T
F
S
30
73°
56°
31
73°
57°
1
74°
58°
2
76°
61°
3
75°
61°
4
79°
60°
5
81°
61°
6
80°
59°
7
77°
59°
8
73°
58°
9
73°
58°
10
74°
59°
11
75°
58°
12
76°
57°
13
79°
58°
14
78°
57°
15
78°
57°
16
77°
56°
17
76°
56°
18
75°
55°
19
74°
56°
20
75°
56°
21
79°
52°
22
77°
51°
23
77°
41°
24
71°
40°
25
72°
49°
26
74°
47°
27
70°
52°
28
74°
54°
29
77°
53°
30
75°
45°
1
75°
40°
2
65°
49°
3
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Whitewater
Whitewater's September 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 40° and 61°. The average high for September is 75° with an average low of 54°. 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 Whitewater. See also: October | November | December.
