Nashua New Hampshire Climate Data

Monthly Average Climate Data for Nashua New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.4 °F34.2 °F3.39 in.
February16.2 °F37.1 °F3.25 in.
March24.2 °F45.0 °F4.21 in.
April34.9 °F58.1 °F4.07 in.
May45.7 °F69.1 °F3.8 in.
June55.1 °F78.2 °F4.29 in.
July60.7 °F83.7 °F3.62 in.
August58.9 °F82.0 °F3.86 in.
September51.0 °F74.6 °F3.81 in.
October39.0 °F61.8 °F4.82 in.
November29.8 °F50.2 °F3.8 in.
December21.0 °F39.6 °F4.31 in.
Annual37.6 °F59.5 °F47.23 in.

Climate Data for Nashua New Hampshire

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 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year