Norwich Connecticut Climate Data

Monthly Average Climate Data for Norwich Connecticut

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.8 °F38.4 °F3.8 in.
February22.6 °F41.1 °F3.44 in.
March29.8 °F48.5 °F4.78 in.
April39.6 °F60.5 °F4.62 in.
May49.3 °F70.8 °F3.54 in.
June58.6 °F79.4 °F3.99 in.
July64.9 °F84.6 °F3.59 in.
August63.2 °F83.3 °F4.4 in.
September55.1 °F76.0 °F4.53 in.
October44.0 °F64.8 °F4.81 in.
November34.6 °F53.8 °F4.09 in.
December27.0 °F43.9 °F4.77 in.
Annual42.5 °F62.1 °F50.36 in.

Climate Data for Norwich Connecticut

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year