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 = 'union-gap' and st_surl='washington' and iso_cc = 'US' and prim_loc in (1,2) Union Gap Washington Climate Data - Updated February 2026

Union Gap Washington Climate Data

Monthly Average Climate Data for Union Gap Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.8 °F38.9 °F1.2 in.
February27.1 °F46.8 °F0.78 in.
March31.7 °F56.0 °F0.66 in.
April36.8 °F63.7 °F0.58 in.
May44.7 °F73.1 °F0.83 in.
June50.4 °F79.6 °F0.55 in.
July56.0 °F88.7 °F0.24 in.
August54.6 °F87.8 °F0.2 in.
September46.5 °F79.0 °F0.26 in.
October37.1 °F64.6 °F0.7 in.
November29.0 °F49.1 °F0.89 in.
December24.0 °F38.0 °F1.38 in.
Annual38.6 °F63.8 °F8.27 in.

Climate Data for Union Gap Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
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