Astoria climate

Astoria Weather in September

NOAA 1991-2020 normals for Astoria Rgnl AP, 5.3 km from Astoria

Average highs run from 69°F on September 1 to 65°F on September 30, and lows from 53°F to 48°F. Normal precipitation for the month is 2.67 in over about 10 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Astoria, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
68°F
Average low
51°F
Precipitation
2.67 in
Record high
95°FSep 2, 1972
Record low
33°FSep 13, 1970
Chance of a freeze
0%
Daylight
13 h 18 min to 11 h 44 min
Cloud cover
51%
Humidity
87%
Dew point
53°F
Wind
5.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 169°F53°F90°F 197238°F 197330%0%
Sep 269°F53°F95°F 197241°F 198430%0%
Sep 369°F52°F87°F 201739°F 195631%0%
Sep 469°F52°F92°F 195541°F 195631%0%
Sep 569°F52°F89°F 202443°F 196931%0%
Sep 669°F52°F90°F 195840°F 199232%0%
Sep 769°F52°F87°F 195838°F 199232%0%
Sep 869°F52°F84°F 199740°F 198832%0%
Sep 969°F52°F87°F 202038°F 197033%0%
Sep 1069°F52°F89°F 197338°F 197033%0%
Sep 1169°F51°F88°F 200937°F 198833%0%
Sep 1268°F51°F86°F 197538°F 198634%0%
Sep 1368°F51°F91°F 195733°F 197034%0%
Sep 1468°F51°F89°F 196737°F 198634%0%
Sep 1568°F51°F79°F 200838°F 196935%0%
Sep 1668°F51°F89°F 202541°F 196035%0%
Sep 1768°F50°F86°F 196236°F 196536%0%
Sep 1868°F50°F82°F 199138°F 196536%0%
Sep 1967°F50°F83°F 197436°F 198336%0%
Sep 2067°F50°F86°F 201440°F 198537%0%
Sep 2167°F50°F85°F 197537°F 196037%0%
Sep 2267°F50°F92°F 200939°F 195638%0%
Sep 2367°F49°F82°F 196536°F 200038%0%
Sep 2466°F49°F85°F 197436°F 197039%0%
Sep 2566°F49°F80°F 198038°F 197239%0%
Sep 2666°F49°F85°F 196739°F 197240%0%
Sep 2766°F49°F84°F 200333°F 197240%0%
Sep 2865°F48°F83°F 198933°F 198341%0%
Sep 2965°F48°F84°F 198734°F 198342%0%
Sep 3065°F48°F86°F 198734°F 198542%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Astoria, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

September 1
sunrise 6:36 AM, sunset 7:54 PM
September 30
sunrise 7:13 AM, sunset 6:57 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094224 (Astoria Rgnl AP), public domain. Records: NOAA GHCN-Daily, station USW00094224, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.