S
M
T
W
T
F
S
26
68°
58°
27
68°
58°
28
71°
56°
29
67°
54°
30
70°
57°
31
71°
58°
1
68°
57°
2
69°
57°
3
69°
54°
4
64°
52°
5
63°
53°
6
64°
51°
7
67°
54°
8
70°
54°
9
68°
54°
10
70°
53°
11
66°
51°
12
64°
51°
13
65°
52°
14
64°
51°
15
65°
53°
16
68°
57°
17
70°
58°
18
74°
57°
19
73°
58°
20
72°
51°
21
68°
59°
22
73°
58°
23
73°
51°
24
66°
51°
25
68°
50°
26
66°
52°
27
68°
49°
28
67°
54°
29
67°
49°
30
65°
49°
31
67°
52°
1
71°
58°
2
73°
58°
3
72°
57°
4
64°
48°
5
66°
48°
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 63° to 74°, with overnight lows between 48° and 59°. The average high for August is 68° with an average low of 54°. 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.