Reston Virginia Climate Data

Monthly Average Climate Data for Reston Virginia

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.7 °C5.9 °C77.47 mm
February-2.9 °C7.8 °C67.82 mm
March0.9 °C12.4 °C97.03 mm
April6.6 °C18.9 °C85.6 mm
May12 °C23.4 °C113.03 mm
June16.9 °C28.2 °C112.52 mm
July19.7 °C30.7 °C110.24 mm
August18.6 °C29.7 °C89.41 mm
September14.9 °C26 °C109.73 mm
October8.1 °C19.6 °C96.27 mm
November2.4 °C13.7 °C82.04 mm
December-1.4 °C8.1 °C91.44 mm
Annual7.7 °C18.7 °C1132.6 mm

Climate Data for Reston Virginia

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 7b : -15°C to -12.2°C
Plant Hardiness Zone - 2012Zone 7a : -17.8°C to -15°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation