Rock Island Texas Climate Data

Monthly Average Climate Data for Rock Island Texas

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January41.7 °F62.8 °F3.28 in.
February45.5 °F66.2 °F2.51 in.
March51.6 °F72.7 °F3.21 in.
April58.1 °F79.6 °F3.31 in.
May66.0 °F86.1 °F4.56 in.
June71.9 °F91.4 °F4.36 in.
July73.4 °F93.8 °F2.72 in.
August73.2 °F95.8 °F3.4 in.
September68.8 °F90.5 °F3.76 in.
October59.4 °F82.5 °F4.29 in.
November49.9 °F72.4 °F3.66 in.
December43.6 °F64.8 °F3.24 in.
Annual58.6 °F79.9 °F42.3 in.

Climate Data for Rock Island Texas

Average First Frost DateNov. 21 - Nov. 30
Average Last Frost DateMar. 11 - Mar. 20
Average Days With Frost20-30 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 8b : 15°F to 20°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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