S
M
T
W
T
F
S
30
82°
44°
31
87°
40°
1
85°
53°
2
73°
51°
3
80°
49°
4
81°
45°
5
83°
46°
6
82°
42°
7
75°
38°
8
82°
39°
9
87°
42°
10
90°
42°
11
87°
52°
12
89°
47°
13
74°
39°
14
64°
42°
15
70°
47°
16
73°
46°
17
68°
42°
18
80°
36°
19
83°
39°
20
80°
41°
21
76°
40°
22
74°
39°
23
73°
39°
24
71°
37°
25
73°
38°
26
75°
35°
27
72°
40°
28
67°
34°
29
66°
37°
30
71°
38°
1
74°
40°
2
76°
40°
3
71°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crescent Valley
Crescent Valley's September 2026 forecast shows daily high temperatures ranging from 64° to 83°, with overnight lows between 34° and 47°. The average high for September is 73° with an average low of 39°. 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 Crescent Valley. See also: October | November | December.
