Stamford Connecticut Climate Data

Monthly Average Climate Data for Stamford Connecticut

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.3 °C3.8 °C101.85 mm
February-4.1 °C4.8 °C75.69 mm
March-0.2 °C8.4 °C107.19 mm
April5.2 °C15.1 °C103.12 mm
May10.6 °C20.5 °C97.03 mm
June16 °C25.6 °C118.62 mm
July19.2 °C28.8 °C97.54 mm
August18.8 °C27.6 °C115.82 mm
September14.7 °C24.4 °C121.16 mm
October9.1 °C18 °C114.05 mm
November3.6 °C12.1 °C101.85 mm
December-0.8 °C6.7 °C115.82 mm
Annual7.3 °C16.3 °C1269.74 mm

Climate Data for Stamford Connecticut

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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