Bay City Michigan Climate Data

Monthly Average Climate Data for Bay City Michigan

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.5 °F29.1 °F1.99 in.
February15.8 °F31.7 °F1.55 in.
March24.0 °F41.3 °F1.82 in.
April35.2 °F54.7 °F3.44 in.
May47.2 °F67.5 °F3.58 in.
June57.0 °F77.6 °F3.51 in.
July60.2 °F81.6 °F3.01 in.
August58.5 °F79.6 °F3.5 in.
September50.9 °F73.4 °F2.79 in.
October40.5 °F60.3 °F3.35 in.
November31.2 °F46.1 °F2.47 in.
December22.6 °F34.6 °F1.89 in.
Annual38.2 °F56.5 °F32.9 in.

Climate Data for Bay City Michigan

Average First Frost DateOct. 1 - Oct. 10
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 ClassificationDfb - Humid Continental Mild Summer, Wet All Year