Topsham Maine Climate Data

Monthly Average Climate Data for Topsham Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.3 °F30.3 °F3.7 in.
February13.2 °F33.4 °F3.53 in.
March22.7 °F41.2 °F4.14 in.
April33.2 °F53.3 °F4.46 in.
May43.7 °F64.3 °F3.63 in.
June53.4 °F73.0 °F4.78 in.
July59.3 °F79.0 °F3.67 in.
August58.0 °F78.3 °F3.45 in.
September50.6 °F70.9 °F4.04 in.
October39.6 °F58.5 °F5.46 in.
November29.8 °F46.8 °F4.53 in.
December19.3 °F36.4 °F4.7 in.
Annual36.2 °F55.5 °F50.09 in.

Climate Data for Topsham Maine

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year