S
M
T
W
T
F
S
26
65°
57°
27
68°
58°
28
68°
55°
29
69°
49°
30
69°
49°
31
75°
51°
1
67°
55°
2
68°
54°
3
76°
48°
4
80°
52°
5
82°
52°
6
68°
56°
7
69°
58°
8
71°
54°
9
67°
58°
10
66°
58°
11
70°
57°
12
69°
59°
13
68°
58°
14
66°
57°
15
69°
53°
16
68°
57°
17
68°
58°
18
67°
57°
19
67°
58°
20
69°
57°
21
67°
58°
22
67°
57°
23
72°
56°
24
70°
55°
25
69°
56°
26
69°
54°
27
68°
55°
28
63°
50°
29
65°
50°
30
66°
52°
31
72°
57°
1
73°
56°
2
72°
56°
3
72°
55°
4
71°
56°
5
72°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Astoria
Astoria's August 2026 forecast shows daily high temperatures ranging from 63° to 73°, with overnight lows between 50° and 58°. The average high for August is 69° with an average low of 55°. 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 Astoria. See also: September | October | November.