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Summit CDP, Washington

Official LSAD Designation: Summit CDP • Census GEOID: 5368365 • Pierce County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Summit CDP.

Reference Weather Station: MCMILLIN RSVR, WA US (ID: USC00455224) • Located 5.6 miles from community center • Elevation: 176.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 46.1° 33.3° 39.7° 6.12"
February 48.0° 33.1° 40.6° 4.33"
March 52.4° 35.7° 44.0° 4.80"
April 57.3° 38.7° 48.0° 3.90"
May 64.3° 44.5° 54.4° 2.97"
June 69.0° 49.0° 59.0° 2.28"
July 75.7° 52.4° 64.0° 0.92"
August 76.5° 52.6° 64.5° 0.90"
September 69.6° 48.2° 58.9° 1.78"
October 59.1° 41.7° 50.4° 4.08"
November 50.3° 36.1° 43.2° 7.06"
December 45.0° 32.9° 39.0° 5.99"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station MCMILLIN RSVR, WA US (ID: USC00455224) • 5.6 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 MCMILLIN RSVR, 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. 39.0 44.5 50.0 55.5 61.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.5°F 2012: Annual mean 49.9°F 2010: Annual mean of daily highs 58.5°F 2012: Annual mean of daily highs 57.9°F 2010: Annual mean of daily lows 42.4°F 2012: Annual mean of daily lows 41.9°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 58.5 42.4
2011 Unavailable Unavailable Unavailable
2012 49.9 57.9 41.9
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 Unavailable Unavailable Unavailable
2018 Unavailable Unavailable Unavailable
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.