Green Valley Maryland Climate Data

Monthly Average Climate Data for Green Valley Maryland

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.2 °C5.2 °C79.25 mm
February-3.4 °C6.9 °C68.83 mm
March0.3 °C11.8 °C98.55 mm
April5.7 °C18.6 °C87.88 mm
May11.3 °C23.4 °C110.49 mm
June16.3 °C28.1 °C114.81 mm
July19.1 °C30.5 °C110.74 mm
August17.8 °C29.4 °C88.39 mm
September14.1 °C25.8 °C114.81 mm
October7.6 °C19.3 °C99.82 mm
November1.9 °C13.1 °C84.84 mm
December-1.7 °C7.4 °C93.47 mm
Annual7.1 °C18.3 °C1151.88 mm

Climate Data for Green Valley Maryland

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation