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Frost Zone Dates




United States Average Zone Frost Dates

Zone 1

Average dates the last frost - 1 Jun / 30 Jun

Average date of the first frost - 1 Jul to 31 Jul

Vulnerable to frost 365 days per year

Zone 2

Average dates the last frost - 1 May to 31 May

Average dates first frost - 1 August to 31 August

Zone 3

Average dates the last frost - 1 May to 31 May

Average dates first frost - 1 September to 30 September

Zone 4

Average dates the last frost - 1 May to 30 May

Average dates the first frost - 1 September to 30 September

Zone 5

Average dates the last frost - 30 March to 30 April

Average dates the first frost - 30 September to 30 October

Zone 6

Average dates the last frost - 30 March to 30 April

Average dates the first frost - 30 September to 30 October

Zone 7

Average dates the last frost - 30 March to 30 April

Average dates the first frost - 30 September to 30 October

Zone 8

Average dates the last frost - 28 February to 30 March

Average dates the first frost - 30 October to 30 November

Zone 9

Average dates the last frost - 30 January to 28 February

Average dates the first frost - 30 November to 30 December

Zone 10

Average dates the last frost - 30 January or before

Average dates the first frost - 30 November to 30 December

Zone 11

Free of Frost throughout the year.

 

 

USDA Plant Hardiness Zone Map

 

 

 

 

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