S
M
T
W
T
F
S
26
90°
72°
27
90°
72°
28
93°
71°
29
90°
73°
30
87°
68°
31
87°
63°
1
88°
70°
2
79°
69°
3
82°
69°
4
85°
67°
5
84°
71°
6
89°
70°
7
N/A
8
88°
72°
9
89°
73°
10
89°
74°
11
89°
73°
12
86°
72°
13
87°
74°
14
87°
75°
15
86°
74°
16
88°
75°
17
90°
75°
18
89°
73°
19
88°
72°
20
89°
71°
21
92°
75°
22
91°
74°
23
91°
75°
24
90°
75°
25
90°
74°
26
91°
74°
27
91°
73°
28
90°
74°
29
91°
74°
30
90°
73°
31
90°
74°
1
91°
73°
2
91°
74°
3
90°
73°
4
88°
72°
5
89°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Warrenton
Warrenton's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 71° and 75°. The average high for August is 89° with an average low of 74°. 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.