S
M
T
W
T
F
S
30
66°
49°
31
80°
54°
1
77°
53°
2
67°
52°
3
69°
52°
4
66°
48°
5
75°
47°
6
73°
49°
7
57°
53°
8
65°
53°
9
77°
48°
10
80°
55°
11
74°
49°
12
75°
50°
13
63°
50°
14
60°
48°
15
58°
50°
16
72°
46°
17
72°
46°
18
76°
47°
19
78°
48°
20
80°
51°
21
82°
50°
22
80°
54°
23
74°
54°
24
73°
49°
25
64°
49°
26
61°
44°
27
62°
37°
28
68°
34°
29
59°
49°
30
62°
43°
1
62°
44°
2
71°
46°
3
69°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Creston
Creston's September 2026 forecast shows daily high temperatures ranging from 62° to 71°, with overnight lows between 44° and 46°. The average high for September is 67° with an average low of 45°. 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 Creston. See also: October | November | December.