S
M
T
W
T
F
S
30
91°
70°
31
91°
72°
1
95°
72°
2
95°
68°
3
95°
72°
4
95°
72°
5
93°
72°
6
91°
68°
7
81°
66°
8
93°
68°
9
79°
68°
10
81°
61°
11
81°
57°
12
75°
61°
13
64°
54°
14
81°
55°
15
73°
59°
16
70°
61°
17
79°
68°
18
91°
68°
19
86°
68°
20
68°
61°
21
64°
59°
22
61°
55°
23
70°
54°
24
68°
55°
25
63°
59°
26
72°
61°
27
75°
61°
28
75°
61°
29
75°
57°
30
72°
66°
1
68°
47°
2
66°
45°
3
70°
50°
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 66° to 70°, with overnight lows between 45° and 50°. The average high for September is 68° with an average low of 47°. 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.