S
M
T
W
T
F
S
26
86°
66°
27
85°
66°
28
81°
65°
29
81°
66°
30
84°
66°
31
86°
67°
1
86°
66°
2
84°
64°
3
88°
66°
4
88°
65°
5
81°
64°
6
84°
61°
7
81°
59°
8
80°
60°
9
80°
58°
10
81°
58°
11
83°
65°
12
88°
66°
13
85°
62°
14
87°
58°
15
81°
60°
16
83°
65°
17
83°
58°
18
81°
58°
19
81°
59°
20
83°
59°
21
85°
63°
22
88°
63°
23
88°
62°
24
87°
64°
25
87°
64°
26
88°
63°
27
87°
62°
28
86°
63°
29
86°
63°
30
85°
57°
31
81°
54°
1
79°
53°
2
78°
54°
3
78°
55°
4
79°
55°
5
77°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Old Washington
Old Washington's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 53° and 67°. The average high for August is 84° with an average low of 61°. 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 Old Washington. See also: September | October | November.