S
M
T
W
T
F
S
30
85°
55°
31
76°
55°
1
76°
62°
2
79°
57°
3
81°
63°
4
83°
61°
5
84°
53°
6
78°
53°
7
75°
51°
8
75°
52°
9
76°
59°
10
77°
56°
11
77°
51°
12
73°
51°
13
74°
50°
14
73°
58°
15
74°
49°
16
77°
48°
17
71°
47°
18
70°
47°
19
70°
48°
20
71°
48°
21
69°
47°
22
70°
47°
23
72°
50°
24
75°
51°
25
76°
55°
26
76°
52°
27
77°
45°
28
68°
52°
29
69°
53°
30
75°
47°
1
70°
51°
2
71°
49°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crestwood
Crestwood's September 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 44° and 63°. The average high for September is 75° with an average low of 52°. 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 Crestwood. See also: October | November | December.