Frost Dates
USDA Frost Dates Reference
Average first and last frost dates by USDA hardiness zone
USDA Frost Dates Reference
Average first and last frost dates by USDA hardiness zone
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3
Northern regions, short season
Last Spring Frost: May 15 • First Fall Frost: September 15 • Growing Days: 120
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4
Cold regions
Last Spring Frost: May 1 • First Fall Frost: October 1 • Growing Days: 150
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5
Mid-latitude regions
Last Spring Frost: April 15 • First Fall Frost: October 15 • Growing Days: 180
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6
Moderate climate
Last Spring Frost: April 1 • First Fall Frost: November 1 • Growing Days: 210
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7
Southern mid-regions
Last Spring Frost: March 15 • First Fall Frost: November 15 • Growing Days: 240
Dates vary by microclimate. Monitor local conditions.
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