S
M
T
W
T
F
S
26
83°
73°
27
86°
74°
28
87°
73°
29
86°
72°
30
85°
71°
31
79°
71°
1
82°
72°
2
86°
74°
3
88°
74°
4
88°
73°
5
87°
72°
6
86°
73°
7
83°
71°
8
83°
68°
9
82°
64°
10
78°
65°
11
79°
66°
12
78°
64°
13
78°
64°
14
79°
65°
15
77°
68°
16
78°
69°
17
84°
67°
18
78°
65°
19
78°
63°
20
80°
65°
21
81°
67°
22
81°
68°
23
84°
70°
24
84°
71°
25
85°
71°
26
86°
70°
27
85°
62°
28
81°
62°
29
77°
64°
30
76°
62°
31
77°
61°
1
76°
62°
2
75°
60°
3
75°
59°
4
76°
61°
5
78°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grand Crossing
Grand Crossing's August 2026 forecast shows daily high temperatures ranging from 75° to 88°, with overnight lows between 59° and 74°. The average high for August is 81° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Grand Crossing. See also: September | October | November.