S
M
T
W
T
F
S
26
89°
76°
27
89°
76°
28
90°
75°
29
87°
76°
30
88°
77°
31
87°
77°
1
87°
76°
2
89°
76°
3
88°
77°
4
88°
77°
5
87°
76°
6
88°
77°
7
88°
77°
8
87°
76°
9
87°
76°
10
88°
77°
11
87°
77°
12
86°
76°
13
88°
77°
14
88°
76°
15
89°
76°
16
90°
77°
17
90°
78°
18
91°
77°
19
87°
75°
20
87°
76°
21
91°
74°
22
89°
74°
23
89°
75°
24
88°
74°
25
90°
76°
26
89°
75°
27
90°
76°
28
89°
74°
29
89°
74°
30
88°
75°
31
88°
74°
1
89°
75°
2
88°
75°
3
89°
74°
4
89°
74°
5
90°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Trinity
Trinity's August 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 74° and 78°. The average high for August is 88° with an average low of 76°. 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. See also: September | October | November.