S
M
T
W
T
F
S
26
87°
71°
27
89°
72°
28
87°
71°
29
85°
71°
30
87°
70°
31
89°
72°
1
90°
71°
2
90°
72°
3
89°
70°
4
88°
71°
5
89°
71°
6
84°
70°
7
86°
66°
8
85°
65°
9
84°
67°
10
84°
66°
11
87°
70°
12
89°
70°
13
89°
69°
14
88°
65°
15
87°
65°
16
83°
70°
17
83°
69°
18
85°
65°
19
85°
64°
20
82°
64°
21
83°
64°
22
83°
64°
23
84°
63°
24
83°
63°
25
83°
64°
26
85°
67°
27
87°
68°
28
88°
69°
29
88°
69°
30
87°
67°
31
86°
61°
1
82°
60°
2
79°
60°
3
80°
62°
4
81°
61°
5
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dahlgren
Dahlgren's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 60° and 72°. The average high for August is 86° with an average low of 67°. 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 Dahlgren. See also: September | October | November.