Ahtanum CDP, Washington

Official LSAD Designation: Ahtanum CDP • Census GEOID: 5300800 • Yakima County

Climate Normals & Weather Observations

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

Reference Weather Station: YAKIMA #2, WA US (ID: USC00459463) • Located 3.0 miles from community center • Elevation: 348.1 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	39.6°	26.8°	33.2°	1.16"
February	47.9°	30.4°	39.2°	0.92"
March	57.3°	34.2°	45.7°	0.68"
April	65.0°	40.0°	52.5°	0.62"
May	73.5°	47.9°	60.7°	0.79"
June	79.6°	53.8°	66.7°	0.61"
July	88.3°	59.7°	74.0°	0.25"
August	87.9°	58.7°	73.3°	0.21"
September	79.4°	51.4°	65.4°	0.33"
October	64.4°	40.2°	52.3°	0.72"
November	48.6°	32.0°	40.3°	0.90"
December	37.8°	25.7°	31.7°	1.41"

2010–2025, completed calendar years only.

NOAA station YAKIMA AIR TERMINAL, WA US (ID: USW00024243) • 3.5 miles from community center .

This annual reference station differs from the monthly normals station (ID: USC00459463), 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	50.7	63.3	38.1
2011	49.4	63.5	35.3
2012	51.5	65.1	37.9
2013	52.2	66.1	38.2
2014	53.0	66.2	39.8
2015	55.1	69.0	41.1
2016	53.9	67.1	40.8
2017	51.9	64.7	39.0
2018	52.6	66.2	39.0
2019	49.4	61.9	37.0
2020	52.4	66.5	38.3
2021	53.0	66.3	39.7
2022	50.1	63.4	36.9
2023	52.2	65.0	39.5
2024	51.9	65.2	38.7
2025	52.8	66.3	39.4

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