S
M
T
W
T
F
S
26
84°
66°
27
90°
68°
28
90°
71°
29
88°
68°
30
88°
69°
31
89°
69°
1
91°
68°
2
85°
76°
3
88°
75°
4
89°
74°
5
91°
75°
6
90°
75°
7
94°
73°
8
93°
74°
9
95°
75°
10
94°
71°
11
89°
71°
12
88°
73°
13
93°
73°
14
87°
77°
15
89°
74°
16
81°
73°
17
94°
71°
18
90°
65°
19
91°
71°
20
87°
67°
21
83°
68°
22
79°
69°
23
85°
65°
24
84°
66°
25
85°
68°
26
87°
66°
27
87°
67°
28
86°
68°
29
85°
67°
30
86°
70°
31
79°
63°
1
79°
63°
2
80°
64°
3
79°
67°
4
78°
65°
5
78°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Triangle
Triangle's August 2026 forecast shows daily high temperatures ranging from 78° to 94°, with overnight lows between 63° and 73°. The average high for August is 84° 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 Triangle. See also: September | October | November.