Griffith Indiana Climate Data

Monthly Average Climate Data for Griffith Indiana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.7 °F32.4 °F2.3 in.
February20.2 °F36.1 °F2.13 in.
March29.0 °F46.8 °F2.35 in.
April39.0 °F59.3 °F3.71 in.
May49.9 °F70.0 °F4.32 in.
June59.8 °F79.8 °F4.7 in.
July64.4 °F83.7 °F4.28 in.
August62.9 °F82.0 °F4.31 in.
September55.2 °F76.2 °F3.4 in.
October43.8 °F63.7 °F3.7 in.
November33.0 °F49.5 °F2.87 in.
December23.3 °F37.4 °F2.32 in.
Annual41.5 °F59.7 °F40.39 in.

Climate Data for Griffith Indiana

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation