S
M
T
W
T
F
S
30
72°
64°
31
83°
69°
1
80°
66°
2
80°
63°
3
74°
61°
4
80°
66°
5
79°
64°
6
77°
51°
7
77°
54°
8
73°
59°
9
78°
63°
10
73°
50°
11
76°
48°
12
78°
57°
13
67°
49°
14
69°
41°
15
72°
55°
16
72°
49°
17
72°
53°
18
66°
52°
19
63°
54°
20
67°
57°
21
63°
42°
22
65°
39°
23
70°
40°
24
71°
42°
25
71°
40°
26
70°
45°
27
69°
46°
28
69°
49°
29
69°
47°
30
66°
48°
1
68°
45°
2
67°
42°
3
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crystal Mountain
Crystal Mountain's September 2026 forecast shows daily high temperatures ranging from 61° to 71°, with overnight lows between 39° and 49°. The average high for September is 68° with an average low of 44°. 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 Crystal Mountain. See also: October | November | December.
