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 = 'rancho-cucamonga' and st_surl='california' and iso_cc = 'US' and prim_loc in (1,2) Rancho Cucamonga California Climate Data - Updated February 2026

Rancho Cucamonga California Climate Data

Monthly Average Climate Data for Rancho Cucamonga California

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January44.1 °F66.7 °F3.56 in.
February44.7 °F67.0 °F4.45 in.
March46.9 °F70.2 °F2.71 in.
April49.2 °F74.2 °F0.88 in.
May53.4 °F78.2 °F0.43 in.
June57.5 °F84.7 °F0.09 in.
July62.4 °F91.3 °F0.05 in.
August63.4 °F93.0 °F0.03 in.
September61.4 °F90.0 °F0.17 in.
October55.5 °F81.5 °F0.74 in.
November48.3 °F73.5 °F0.97 in.
December43.6 °F65.7 °F2.49 in.
Annual52.5 °F78 °F16.57 in.

Climate Data for Rancho Cucamonga California

Average First Frost DateNo Frost
Average Last Frost Date
Average Days With FrostFrost Free
Plant Hardiness ZoneZone 10a : 30°F to 25°F
Plant Hardiness Zone - 2012Zone 10a : 30°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCsa - Hot-Summer Mediterranean Climate
2026 plantmaps.com