S
M
T
W
T
F
S
30
79°
58°
31
72°
50°
1
77°
48°
2
84°
50°
3
79°
59°
4
84°
54°
5
81°
64°
6
88°
63°
7
81°
55°
8
72°
55°
9
77°
52°
10
84°
50°
11
63°
48°
12
59°
43°
13
68°
37°
14
57°
48°
15
61°
39°
16
59°
37°
17
70°
30°
18
75°
59°
19
66°
48°
20
59°
46°
21
70°
39°
22
71°
51°
23
66°
49°
24
81°
52°
25
75°
55°
26
71°
40°
27
65°
43°
28
61°
40°
29
63°
41°
30
68°
42°
1
68°
44°
2
62°
37°
3
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Crosby
Crosby's September 2026 forecast shows daily high temperatures ranging from 61° to 81°, with overnight lows between 37° and 55°. The average high for September is 68° 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 Crosby. See also: October | November | December.
