Palatine Illinois Climate Data

Monthly Average Climate Data for Palatine Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.4 °F30.8 °F1.99 in.
February18.1 °F34.5 °F1.96 in.
March27.5 °F45.6 °F2.25 in.
April37.7 °F58.2 °F3.76 in.
May48.6 °F69.4 °F4.61 in.
June58.5 °F79.6 °F4.49 in.
July63.8 °F83.9 °F3.73 in.
August62.4 °F81.7 °F4.09 in.
September54.4 °F75.0 °F3.31 in.
October42.5 °F62.1 °F3.24 in.
November31.4 °F47.9 °F2.4 in.
December21.4 °F36.1 °F2.13 in.
Annual40.1 °F58.7 °F37.96 in.

Climate Data for Palatine Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation