S
M
T
W
T
F
S
30
76°
62°
31
77°
61°
1
76°
62°
2
75°
60°
3
75°
59°
4
76°
61°
5
78°
65°
6
74°
64°
7
74°
61°
8
79°
58°
9
73°
63°
10
76°
67°
11
79°
65°
12
80°
65°
13
79°
57°
14
74°
63°
15
72°
57°
16
71°
56°
17
69°
63°
18
76°
58°
19
73°
61°
20
71°
54°
21
76°
53°
22
68°
51°
23
75°
60°
24
76°
62°
25
Hist. Avg.
73°
55°
26
Hist. Avg.
73°
55°
27
Hist. Avg.
72°
54°
28
Hist. Avg.
72°
54°
29
Hist. Avg.
71°
53°
30
Hist. Avg.
71°
53°
1
Hist. Avg.
70°
53°
2
Hist. Avg.
70°
52°
3
Hist. Avg.
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Grand Crossing
Grand Crossing's September 2026 forecast shows daily high temperatures ranging from 68° to 80°, with overnight lows between 51° and 67°. The average high for September is 75° with an average low of 60°. 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 Grand Crossing. See also: October | November | December.
