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 = 'rio-grande-city' and st_surl='texas' and iso_cc = 'US' and prim_loc in (1,2) Rio Grande City Texas Climate Data - Updated February 2026

Rio Grande City Texas Climate Data

Monthly Average Climate Data for Rio Grande City Texas

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January47.6 °F70.9 °F0.7 in.
February51.6 °F75.8 °F0.77 in.
March57.8 °F82.1 °F0.95 in.
April64.3 °F88.6 °F1.38 in.
May71.0 °F93.7 °F2.7 in.
June74.8 °F98.1 °F2.36 in.
July75.9 °F99.3 °F1.56 in.
August75.8 °F99.8 °F1.25 in.
September72.2 °F94.3 °F4.57 in.
October65.0 °F88.4 °F2.05 in.
November55.9 °F79.2 °F1.01 in.
December48.7 °F71.9 °F0.86 in.
Annual63.4 °F86.8 °F20.16 in.

Climate Data for Rio Grande City Texas

Average First Frost DateDec. 11 - Dec. 20
Average Last Frost DateFeb. 1 - Feb. 10
Average Days With FrostFrost Rare
Plant Hardiness ZoneZone 9b : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsExtreme Drought
Köppen Climate ClassificationBSh - Hot Semi-Arid Climate
2026 plantmaps.com