Bristol Maine Climate Data

Monthly Average Climate Data for Bristol Maine

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.9 °F32.3 °F3.96 in.
February19.6 °F33.9 °F3.61 in.
March26.4 °F40.0 °F4.49 in.
April35.3 °F50.2 °F4.37 in.
May44.3 °F59.9 °F3.69 in.
June53.0 °F68.4 °F4.24 in.
July58.7 °F74.1 °F3.4 in.
August58.6 °F74.2 °F3.09 in.
September53.1 °F67.8 °F4.08 in.
October44.1 °F57.0 °F5.11 in.
November35.1 °F47.4 °F4.49 in.
December25.4 °F38.1 °F4.79 in.
Annual39.4 °F53.6 °F49.32 in.

Climate Data for Bristol Maine

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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 ConditionsModerate Drought
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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