select pnm,lnm,st_cd,st_nm,cnty_id,dm,dm_date,dm_hist,avg_tmax_data,avg_tmin_data,avg_prcp_data,rec_hi_data,rec_lo_data,avg_sndp_data,x,y,ff,lf,fd,hz,er,hz_source,kg,hzd,clim_stn_nm,hz12,hz90, feels_like_min,feels_like_max,days_of_prcp,snow,cloud_cover,humidity,wind_speed from worldtg8_pm.pm_climate_points_namer where surl = 'chelan' and st_surl='washington' and iso_cc = 'US' and prim_loc in (1,2) Chelan Washington Climate Data - Updated February 2026

Chelan Washington Climate Data

Monthly Average Climate Data for Chelan Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.1 °F33.9 °F1.59 in.
February26.8 °F41.0 °F1.0 in.
March32.8 °F52.2 °F1.06 in.
April39.1 °F62.1 °F0.8 in.
May46.5 °F72.1 °F0.91 in.
June52.7 °F78.6 °F0.71 in.
July58.9 °F88.1 °F0.33 in.
August58.4 °F87.6 °F0.24 in.
September50.8 °F77.8 °F0.33 in.
October40.5 °F61.8 °F0.96 in.
November31.9 °F45.1 °F1.46 in.
December25.2 °F34.5 °F1.69 in.
Annual40.6 °F61.2 °F11.08 in.

Climate Data for Chelan Washington

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 1 - Apr. 10
Average Days With Frost75-100 Days
Plant Hardiness ZoneZone 7b : 5°F to 10°F
Plant Hardiness Zone - 2012Zone 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDsb - Humid Continental Climate - Dry Cool Summer
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