S
M
T
W
T
F
S
30
90°
69°
31
92°
73°
1
94°
69°
2
94°
72°
3
94°
73°
4
94°
73°
5
95°
71°
6
85°
64°
7
N/A
8
92°
70°
9
86°
68°
10
82°
55°
11
84°
65°
12
85°
64°
13
88°
66°
14
88°
61°
15
79°
55°
16
75°
54°
17
79°
59°
18
80°
55°
19
76°
52°
20
79°
51°
21
82°
57°
22
77°
56°
23
79°
55°
24
82°
56°
25
83°
57°
26
83°
57°
27
82°
56°
28
82°
57°
29
81°
57°
30
80°
55°
1
77°
50°
2
68°
45°
3
67°
41°
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 67° to 92°, with overnight lows between 41° and 70°. The average high for September is 81° with an average low of 57°. 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.
