Manassas Virginia Climate Data

Monthly Average Climate Data for Manassas Virginia

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.2 °C6.3 °C72.39 mm
February-3.4 °C8.1 °C63.25 mm
March0.6 °C12.8 °C88.9 mm
April6.1 °C19.4 °C76.45 mm
May11.6 °C23.8 °C104.39 mm
June16.7 °C28.7 °C110.74 mm
July19.4 °C31.1 °C103.12 mm
August18.2 °C30 °C95.25 mm
September14.5 °C26.5 °C109.98 mm
October7.5 °C20.1 °C90.93 mm
November1.7 °C13.9 °C80.77 mm
December-1.9 °C8.4 °C86.61 mm
Annual7.2 °C19.1 °C1082.78 mm

Climate Data for Manassas Virginia

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
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 ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate