S
M
T
W
T
F
S
26
101°
70°
27
101°
69°
28
102°
70°
29
104°
73°
30
107°
75°
31
101°
65°
1
102°
67°
2
103°
63°
3
102°
65°
4
103°
65°
5
102°
64°
6
101°
63°
7
99°
62°
8
95°
58°
9
96°
61°
10
95°
61°
11
96°
60°
12
94°
60°
13
94°
59°
14
93°
60°
15
93°
60°
16
94°
59°
17
95°
60°
18
95°
60°
19
94°
61°
20
95°
61°
21
95°
60°
22
94°
59°
23
95°
60°
24
95°
60°
25
94°
59°
26
93°
59°
27
88°
57°
28
87°
55°
29
86°
52°
30
86°
52°
31
87°
53°
1
87°
52°
2
86°
52°
3
86°
52°
4
85°
53°
5
86°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Grapevine
Grapevine's August 2026 forecast shows daily high temperatures ranging from 85° to 107°, with overnight lows between 52° and 75°. The average high for August is 95° 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 August weather will actually feel in Grapevine. See also: September | October | November.
