S
M
T
W
T
F
S
30
82°
51°
31
84°
52°
1
84°
52°
2
83°
51°
3
83°
51°
4
84°
48°
5
79°
49°
6
80°
47°
7
79°
46°
8
78°
50°
9
80°
52°
10
81°
45°
11
79°
50°
12
80°
47°
13
76°
49°
14
73°
43°
15
74°
42°
16
Hist. Avg.
77°
42°
17
Hist. Avg.
77°
41°
18
Hist. Avg.
76°
41°
19
Hist. Avg.
76°
41°
20
Hist. Avg.
76°
40°
21
Hist. Avg.
75°
40°
22
Hist. Avg.
75°
39°
23
Hist. Avg.
74°
39°
24
Hist. Avg.
74°
39°
25
Hist. Avg.
73°
38°
26
Hist. Avg.
73°
38°
27
Hist. Avg.
72°
38°
28
Hist. Avg.
72°
37°
29
Hist. Avg.
72°
37°
30
Hist. Avg.
71°
36°
1
Hist. Avg.
71°
36°
2
Hist. Avg.
70°
36°
3
Hist. Avg.
70°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Crystal
Crystal's September 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 42° and 52°. The average high for September is 80° with an average low of 49°. 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. See also: October | November | December.
