S
M
T
W
T
F
S
26
72°
59°
27
71°
58°
28
72°
56°
29
73°
55°
30
72°
53°
31
68°
52°
1
69°
55°
2
72°
56°
3
73°
56°
4
72°
54°
5
71°
51°
6
69°
52°
7
71°
58°
8
73°
58°
9
74°
54°
10
74°
51°
11
72°
49°
12
67°
51°
13
70°
50°
14
70°
49°
15
69°
50°
16
70°
54°
17
73°
58°
18
72°
58°
19
73°
59°
20
74°
58°
21
72°
57°
22
66°
55°
23
67°
57°
24
71°
56°
25
66°
50°
26
64°
53°
27
65°
49°
28
64°
49°
29
66°
50°
30
67°
49°
31
66°
51°
1
66°
56°
2
65°
56°
3
65°
55°
4
64°
55°
5
65°
51°
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 64° to 74°, with overnight lows between 49° and 59°. The average high for August is 69° 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 Astoria. See also: September | October | November.