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Ilwaco city, Washington

Official LSAD Designation: Ilwaco city • Census GEOID: 5333000 • Pacific County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Ilwaco city.

Reference Weather Station: LONG BEACH EXP STN, WA US (ID: USC00454748) • Located 4.2 miles from community center • Elevation: 7.6 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 48.8° 35.9° 42.4° 12.04"
February 50.4° 35.4° 42.9° 7.76"
March 52.4° 37.3° 44.9° 8.71"
April 55.0° 40.2° 47.6° 6.79"
May 58.9° 45.1° 52.0° 3.55"
June 62.0° 48.9° 55.4° 2.58"
July 65.2° 51.8° 58.5° 1.01"
August 66.5° 51.6° 59.0° 1.63"
September 66.0° 47.9° 56.9° 2.66"
October 59.7° 42.2° 51.0° 8.20"
November 52.5° 38.2° 45.4° 11.43"
December 48.2° 35.8° 42.0° 12.15"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station LONG BEACH EXP STN, WA US (ID: USC00454748) • 4.2 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at LONG BEACH EXP STN, WA US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 40.0 45.5 51.0 56.5 62.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.5°F 2011: Annual mean 48.8°F 2012: Annual mean 49.8°F 2013: Annual mean 49.8°F 2014: Annual mean 52.0°F 2015: Annual mean 52.6°F 2016: Annual mean 52.5°F 2018: Annual mean 51.1°F 2010: Annual mean of daily highs 56.6°F 2011: Annual mean of daily highs 55.6°F 2012: Annual mean of daily highs 56.0°F 2013: Annual mean of daily highs 56.3°F 2014: Annual mean of daily highs 58.3°F 2015: Annual mean of daily highs 59.8°F 2016: Annual mean of daily highs 58.7°F 2018: Annual mean of daily highs 58.8°F 2010: Annual mean of daily lows 44.5°F 2011: Annual mean of daily lows 42.1°F 2012: Annual mean of daily lows 43.6°F 2013: Annual mean of daily lows 43.3°F 2014: Annual mean of daily lows 45.7°F 2015: Annual mean of daily lows 45.4°F 2016: Annual mean of daily lows 46.3°F 2018: Annual mean of daily lows 43.4°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 50.5 56.6 44.5
2011 48.8 55.6 42.1
2012 49.8 56.0 43.6
2013 49.8 56.3 43.3
2014 52.0 58.3 45.7
2015 52.6 59.8 45.4
2016 52.5 58.7 46.3
2017 Unavailable Unavailable Unavailable
2018 51.1 58.8 43.4
2019 Unavailable Unavailable Unavailable
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.