Slidell Louisiana Climate Data

Monthly Average Climate Data for Slidell Louisiana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January42.0 °F61.7 °F5.78 in.
February45.5 °F65.3 °F4.58 in.
March51.7 °F71.4 °F5.14 in.
April58.4 °F77.3 °F5.41 in.
May66.4 °F84.2 °F5.53 in.
June72.7 °F89.1 °F6.15 in.
July74.4 °F90.7 °F7.8 in.
August74.3 °F90.9 °F7.05 in.
September70.6 °F87.6 °F4.95 in.
October60.8 °F80.1 °F4.04 in.
November50.6 °F70.7 °F4.19 in.
December44.5 °F63.7 °F5.01 in.
Annual59.3 °F77.7 °F65.63 in.

Climate Data for Slidell Louisiana

Average First Frost DateNov. 21 - Nov. 30
Average Last Frost DateMar. 11 - Mar. 20
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 ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate