S
M
T
W
T
F
S
30
84°
67°
31
86°
69°
1
88°
69°
2
88°
70°
3
87°
70°
4
87°
66°
5
83°
65°
6
83°
66°
7
84°
69°
8
83°
69°
9
84°
67°
10
85°
68°
11
86°
67°
12
86°
68°
13
85°
67°
14
86°
67°
15
86°
66°
16
85°
67°
17
85°
67°
18
84°
66°
19
84°
65°
20
83°
61°
21
82°
65°
22
80°
64°
23
80°
63°
24
83°
59°
25
82°
58°
26
78°
63°
27
81°
62°
28
77°
61°
29
81°
60°
30
81°
61°
1
80°
60°
2
80°
60°
3
76°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Walnut Hills
Walnut Hills's September 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 58° and 70°. The average high for September is 83° with an average low of 65°. 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 Walnut Hills. See also: October | November | December.