Ann Arbor Michigan Climate Data

Monthly Average Climate Data for Ann Arbor Michigan

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.1 °F31.5 °F2.6 in.
February17.0 °F34.5 °F2.13 in.
March25.0 °F44.9 °F2.57 in.
April36.0 °F58.0 °F3.34 in.
May47.0 °F70.1 °F3.65 in.
June56.6 °F78.8 °F3.57 in.
July60.2 °F83.0 °F3.34 in.
August59.1 °F81.0 °F3.29 in.
September51.5 °F74.5 °F2.97 in.
October40.3 °F61.8 °F2.9 in.
November30.7 °F48.1 °F2.63 in.
December22.3 °F36.4 °F2.45 in.
Annual38.5 °F58.6 °F35.44 in.

Climate Data for Ann Arbor Michigan

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation