Sammamish city, Washington

Official LSAD Designation: Sammamish city • Census GEOID: 5361115 • King County

Climate Normals & Weather Observations

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

Reference Weather Station: SNOQUALMIE FALLS, WA US (ID: USC00457773) • Located 10.1 miles from community center • Elevation: 134.1 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	46.4°	35.8°	41.1°	8.64"
February	49.6°	35.3°	42.4°	5.83"
March	53.7°	37.2°	45.4°	6.74"
April	58.9°	40.1°	49.5°	5.29"
May	64.1°	46.1°	55.1°	4.04"
June	69.0°	50.6°	59.8°	3.15"
July	75.8°	54.0°	64.9°	1.24"
August	76.7°	53.7°	65.2°	1.22"
September	70.4°	49.1°	59.7°	3.02"
October	59.5°	43.5°	51.5°	6.22"
November	51.1°	38.3°	44.7°	9.47"
December	45.8°	35.7°	40.7°	8.42"

2010–2025, completed calendar years only.

NOAA station RENTON MUNI AP, WA US (ID: USW00094248) • 10.8 miles from community center .

This annual reference station differs from the monthly normals station (ID: USC00457773), which has no available annual mean history.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

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	53.3	60.5	46.0
2011	51.6	58.8	44.3
2012	53.3	60.7	45.9
2013	53.1	60.3	45.9
2014	55.1	62.8	47.4
2015	55.8	63.9	47.8
2016	55.7	63.4	47.9
2017	53.7	61.6	45.9
2018	55.2	62.9	47.4
2019	54.0	61.8	46.3
2020	54.1	61.7	46.4
2021	54.3	62.0	46.5
2022	53.8	61.5	46.0
2023	54.9	62.8	46.9
2024	Unavailable	Unavailable	Unavailable
2025	Unavailable	Unavailable	Unavailable

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.