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 = 'ritzville' and st_surl='washington' and iso_cc = 'US' and prim_loc in (1,2) Ritzville Washington Climate Data - Updated February 2026

Ritzville Washington Climate Data

Monthly Average Climate Data for Ritzville Washington

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.0 °F35.8 °F1.62 in.
February26.2 °F42.0 °F1.13 in.
March30.2 °F51.4 °F1.35 in.
April34.0 °F59.8 °F0.94 in.
May41.0 °F69.2 °F1.1 in.
June46.4 °F76.3 °F0.87 in.
July52.4 °F86.9 °F0.29 in.
August52.3 °F86.2 °F0.28 in.
September45.0 °F76.6 °F0.43 in.
October35.8 °F61.5 °F1.01 in.
November28.7 °F45.3 °F1.38 in.
December23.3 °F35.2 °F1.62 in.
Annual36.6 °F60.5 °F12.02 in.

Climate Data for Ritzville Washington

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness ZoneZone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationBSk - Cold Semi-Arid Climate
2026 plantmaps.com