S
M
T
W
T
F
S
30
67°
53°
31
72°
49°
1
66°
51°
2
68°
50°
3
66°
56°
4
72°
55°
5
73°
56°
6
73°
56°
7
65°
49°
8
64°
48°
9
65°
52°
10
68°
54°
11
71°
54°
12
72°
56°
13
64°
55°
14
68°
56°
15
65°
54°
16
65°
55°
17
66°
50°
18
65°
55°
19
64°
52°
20
68°
48°
21
66°
47°
22
64°
49°
23
65°
52°
24
69°
51°
25
70°
52°
26
Hist. Avg.
66°
49°
27
Hist. Avg.
66°
49°
28
Hist. Avg.
65°
48°
29
Hist. Avg.
65°
48°
30
Hist. Avg.
65°
48°
1
Hist. Avg.
65°
48°
2
Hist. Avg.
64°
48°
3
Hist. Avg.
64°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Astoria
Astoria's September 2026 forecast shows daily high temperatures ranging from 64° to 73°, with overnight lows between 47° and 56°. The average high for September is 67° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Astoria. See also: October | November | December.
