Bristol New Hampshire Climate Data

Monthly Average Climate Data for Bristol New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.1 °F30.1 °F3.16 in.
February12.0 °F33.2 °F2.56 in.
March21.0 °F41.8 °F3.38 in.
April32.5 °F55.5 °F3.96 in.
May43.7 °F68.1 °F4.05 in.
June53.3 °F76.5 °F4.2 in.
July58.8 °F81.9 °F3.89 in.
August56.7 °F80.2 °F4.03 in.
September49.2 °F72.6 °F3.44 in.
October37.9 °F59.1 °F5.43 in.
November28.7 °F46.6 °F4.04 in.
December18.8 °F35.7 °F4.29 in.
Annual35.3 °F56.8 °F46.43 in.

Climate Data for Bristol New Hampshire

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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