S
M
T
W
T
F
S
26
86°
74°
27
85°
74°
28
85°
73°
29
86°
74°
30
86°
74°
31
88°
73°
1
89°
74°
2
89°
75°
3
87°
73°
4
85°
70°
5
86°
72°
6
90°
70°
7
91°
69°
8
87°
70°
9
87°
69°
10
88°
70°
11
91°
72°
12
91°
72°
13
90°
73°
14
91°
74°
15
91°
74°
16
89°
73°
17
88°
74°
18
88°
74°
19
90°
72°
20
88°
72°
21
90°
71°
22
86°
71°
23
86°
72°
24
87°
69°
25
86°
73°
26
89°
74°
27
90°
72°
28
89°
73°
29
90°
74°
30
90°
73°
31
89°
68°
1
85°
68°
2
85°
69°
3
87°
67°
4
89°
68°
5
89°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Warrenton
Warrenton's August 2026 forecast shows daily high temperatures ranging from 85° to 91°, with overnight lows between 67° and 75°. The average high for August is 88° with an average low of 72°. 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 Warrenton. See also: September | October | November.