S
M
T
W
T
F
S
26
83°
59°
27
85°
66°
28
87°
70°
29
84°
67°
30
85°
67°
31
86°
65°
1
86°
66°
2
87°
71°
3
87°
73°
4
84°
73°
5
89°
75°
6
90°
74°
7
90°
72°
8
91°
73°
9
92°
72°
10
92°
69°
11
88°
69°
12
85°
70°
13
90°
72°
14
88°
71°
15
86°
72°
16
85°
72°
17
92°
73°
18
87°
70°
19
89°
68°
20
94°
69°
21
82°
65°
22
85°
66°
23
86°
65°
24
86°
58°
25
N/A
26
86°
71°
27
87°
70°
28
82°
70°
29
83°
66°
30
85°
69°
31
90°
69°
1
82°
64°
2
82°
63°
3
81°
64°
4
84°
63°
5
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Colonial Beach
Colonial Beach's August 2026 forecast shows daily high temperatures ranging from 81° to 90°, with overnight lows between 62° and 71°. The average high for August is 84° with an average low of 66°. 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 Colonial Beach. See also: September | October | November.