Mermentau Louisiana Climate Data

Monthly Average Climate Data for Mermentau Louisiana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January41.8 °F60.4 °F6.44 in.
February45.4 °F64.3 °F4.5 in.
March51.6 °F71.0 °F3.66 in.
April58.5 °F77.5 °F5.03 in.
May66.6 °F84.2 °F5.46 in.
June72.5 °F89.3 °F6.36 in.
July74.2 °F90.8 °F5.57 in.
August73.6 °F91.4 °F6.03 in.
September69.2 °F87.9 °F5.35 in.
October58.9 °F80.5 °F4.81 in.
November49.4 °F70.2 °F4.88 in.
December43.8 °F62.7 °F4.78 in.
Annual58.8 °F77.5 °F62.87 in.

Climate Data for Mermentau Louisiana

Average First Frost DateDec. 1 - Dec. 10
Average Last Frost DateMar. 1 - Mar. 10
Average Days With Frost10-20 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 9a : 20°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate