Zipcode 20171 - Herndon Virginia is in Hardiness Zones 6b and 7a

Zip Code 20171 Border
Zone 6b
-5°F to 0°F
Zone 7a
0°F to 5°F
View the Full Virginia Hardiness Zone Map

Additional Gardening Related Data for Zipcode 20171 - Herndon, Virginia

1990 Hardiness Zone:Zone 6b: -5F to 0FVirginia 1990 USDA Hardiness Zone Map
Average First Frost:October 11 - 20Virginia First Frost Date Map
Average Last Frost:April 21 - 30Virginia Last Frost Date Map
Koppen-Geiger Climate Zone:Dfa - Humid Continental Hot Summers
Ecoregion:64a - Triassic LowlandsVirginia Ecoregions
Palmer Drought Index: NormalVirginia Drought Index Map
Heat Zone Days: 31 - 45 days Over 86°FVirginia Heat Zones Map

Annual Climate Data for Zipcode 20171 - Herndon, VA

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)22243241505964635542342643
Avg Max Temp (°F)42465566758387867968574666
Avg Precip (In.)3.122.743.583.214.213.913.653.753.923.363.313.1341.89

Related Maps

  • Virginia 2012 USDA Hardiness Zone Map
  • Virginia 1990 USDA Hardiness Zone Map
  • Virginia First Frost Date Map
  • Virginia Last Frost Date Map
  • Map of Virginia Record High/Low Temperatures
  • Virginia Interactive Drought Monitor Map
  • Virginia Drought Index Map
  • Virginia Ecoregions
  • Virginia Heat Zones Map

Source Data:

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