Frost Dates for the USA

Dates of the first and last frosts in the USA

Dates are given based upon when a 50% chance that the first or last frost of the year has occurred.

If you want to be conservative or take a risk then add or subtract an extra two weeks to the date of the first or last frosts.

Frost Dates
Flower in the frost by Gabriel Anast.

Note:
Early = 1st to 10th of the month
Mid = 11th to 20th of the month
Late = 21st to 31st of the month

Frost times for the United States of America
Brought to you by GardenersHQ
State	City	Average date of last frost	Average date of first frost
Alabama	Birmingham	Early April	Early November
	Montgomery	Mid March	Mid November
	Mobile	Late Feburary	Late November
	Tuscaloosa	Early April	Early November
Alaska	Anchorage	Mid May	Late September
	Faibanks	Mid May	Early September
Arizona	Phoenix	Mid December	Late January
	Tucson	Mid Feburary	Late November
	Chandler	Mid Feburary	Late November
Arkansas	Little Rock	Late March	Mid November
	Fort Smith	Late March	Late October
California	Los Angeles	No frost likely	No frost likely
	San Francisco	Late January (10% chance of frost)	Mid December (10% chance of frost)
	Sacramento	Mid Feburary	Early December
	Tahoe City	Mid June	Mid September
Colorado	Denver	Late April	Early October
	Colorado Springs	Early May	Early October
	Lakewood	Early May	Early October
Connecticut	Bridgeport	Mid April	Early November
	Hartford	Late April	Early October
Delaware	Wilmington	Mid April	Late October
District of Columbia	Washington DC	Late March	Mid November
Florida	Jacksonville	Late Feburary	Early December
	Miami	Mid January (only 10% chance of a frost in a given year)	Late January (only 10% chance of a frost in a given year)
	Tampa	Late January (low chance of a frost)	Early January (low chance of a frost)
Georgia	Atlanta	Late March	Mid November
	Columbus	Mid March	Mid November
	Savannah	Early March	Late November
Hawaii	Honolulu	No expected frost	No expected frost
	Hilo	No expected frost	No expected frost
Idaho	Boise	Mid May	Early October
	Idaho Falls	Late June	Late August
Illinois	Chicago	Late April	Mid October
	Aurora	Late April	Early October
	Rockford	Late April	Early October
Indiana	Indianapolis	Mid April	Mid October
	Fort Wayne	Late April	Mid October
	Evansville	Mid April	Late October
Iowa	Des Moines	Mid April	Mid October
	Cedar Rapids	Late April	Early October
	Sioux City	Late April	Early October
Kansas	Wichita	Mid April	Late October
	Topeka	Mid April	Mid October
	Olathe	Early April	Late October
Kentucky	Lexington	Mid April	Late October
	Louisville	Early April	Early November
	Bowling Green	Mid April	Late October
Louisiana	New Orleans	Mid Feburary	Mid December
	Baton Rouge	Late feburary	Late November
	Shreveport	Mid March	Mid November
	Lafayette	Mid Feburary	Early December
Maine	Portland	Early May	Early October
	Lewiston	Late April	Mid October
Maryland	Baltimore	Mid April	Late October
	Rockville	Mid April	Late October
Massachusetts	Boston	Early April	Early November
	Worcester	Late April	Mid October
	Lowell	Late April	Early October
Michigan	Detroit	Late April	Mid October
	Grand Rapids	Early May	Early October
	Flint	Early May	Mid October
Minnesota	Minneapolis	Late April	Early October
	St Paul	Late April	Early October
	Rochester	Early May	Early October
	Duluth	Late May	Late September
Mississippi	Jackson	Late March	Early November
	Gulfport	Late Feburary	Early December
	Biloxi	Late feburary	Early December
Missouri	Kansas City	Early April	Late October
	Saint Louis	Early April	Late October
	Springfield	Mid April	Late October
Montana	Billings	Early May	Early October
	Missoula	Late May	Mid September
	Great Falls	Mid May	Late September
Nebraska	Omaha	Late April	Early October
	Lincoln	Late April	Early October
	Grand Island	Late April	Early October
Nevada	Las Vegas	Mid Feburary	Late November
	Paradise Valley	Mid June	Early September
	Reno	Late May	Early October
	Lovelock	Mid May	Late September
New Hampshire	Durham	Mid May	Late September
	Nashua	Early May	Early October
	Hannover	Mid May	Early October
	Concord	Mid May	Late September
New Jersey	Newark	Early April	Early November
	Toms River	Late April	Mid October
New Mexico	Albuquerque	Mid April	Late October
	Santa Fe	Early May	Mid October
New York	New York City	Early April	Late November
	Long island	Late March	Mid November
	Ithaca	Mid May	Early October
	Syracuse	Late April	Mid October
	Rochester	Late April	Mid October
	Buffalo	Late April	Mid October
	Albany	Early May	Early October
North Carolina	Charlottte	Late March	Early November
	Raleigh	Early April	Early November
	Durham	Early April	Late October
	Fayetteville	Late March	Early November
North Dakota	Fargo	Mid May	Late September
	Bismarck	Mid May	Late September
	Grand Forks	Mid May	Mid September
Ohio	Columbus	Late April	Mid October
	Cleveland	Late April	Late October
	Toledo	Early May	Early October
	Cincinnati	Mid April	Late October
Oklahoma	Oklahoma City	Early April	Early November
	Tulsa	Late March	Early November
	Norman	Early April	Early November
Oregon	Portland	Late March	Mid November
	Salem	Late April	Mid October
	Eugene	Late April	Mid October
Pennsylvania	Philadelphia	Early April	Early November
	Pittsburgh	Late April	Mid October
	Allentown	Mid April	Mid October
	Erie	Late April	Late October
Rhode Island	Providence	Mid April	Late October
	Kingston	Early May	Early October
South Carolina	Columbia	Early April	Early November
	Charleston	Early March	Late November
	Greenville	Early April	Early November
South Dakota	Sioux Falls	Early May	Late September
	Rapid City	Early May	Late September
	Aberdeen	Early May	Late September
Tennessee	Memphis	Mid March	Mid November
	Nashville	Early April	Late October
	Knoxville	Early April	Early November
	Chattanooga	Early April	Early November
Texas	Houston	Early March	Late November
	San Antonio	Late Feburary	Late November
	Dallas	Early March	Late November
	Austin	Mid Feburary	Early December
	El Paso	Late March	Early November
Utah	Salt Lake City	Mid April	Late October
	Ogden	Early May	Mid October
Vermont	Burlington	Early May	Early October
	Essex Junction	Mid May	Late September
Virginia	Norfolk	Mid March	Late November
	Richmond	Early April	Late October
Washington	Seattle	Early March	Mid November
	Spokane	Early May	Early October
	Vancouver	Mid April	Mid October
West Virginia	Charleston	Late April	Late October
	Huntington	Mid April	Late October
	Parkersburg	Late April	Mid October
Wisconsin	Milwaukee	Late April	Mid October
	Madison	Early May	Early October
	Green Bay	Early May	Early October
Wyoming	Cheyenne	Mid May	Late September
	Casper	Late May	Mid September
	Laramie	Early June	Mid September