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. 21 - Feb. 29
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 9b : 25°F to 20°F
Plant Hardiness Zone - 2012Zone 9b : 25°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationBSh - Hot Semi-Arid Climate