S
M
T
W
T
F
S
26
88°
54°
27
87°
52°
28
84°
50°
29
76°
43°
30
76°
41°
31
77°
44°
1
77°
48°
2
80°
49°
3
86°
51°
4
86°
51°
5
85°
49°
6
87°
51°
7
87°
50°
8
85°
49°
9
80°
47°
10
81°
43°
11
80°
46°
12
81°
40°
13
76°
44°
14
79°
49°
15
85°
51°
16
85°
43°
17
75°
47°
18
74°
42°
19
73°
40°
20
73°
43°
21
74°
50°
22
76°
51°
23
82°
44°
24
72°
43°
25
71°
39°
26
72°
44°
27
74°
51°
28
73°
43°
29
72°
44°
30
74°
44°
31
75°
43°
1
78°
41°
2
68°
43°
3
Hist. Avg.
71°
46°
4
Hist. Avg.
71°
46°
5
Hist. Avg.
71°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Trinity Valley
Trinity Valley's August 2026 forecast shows daily high temperatures ranging from 68° to 88°, with overnight lows between 39° and 54°. The average high for August is 79° with an average low of 46°. 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 Trinity Valley. See also: September | October | November.
