Average Frost Dates

The dates listed above are normal averages for a light freeze/frost. The possibility of a frost occurring after the spring dates and before the fall dates is 50 percent. Frost/freeze temperatures are categorized by their effect on plants:

  • Light freeze: 29 degrees F to 32 degrees F – tender plants killed, with little destructive effect on other vegetation.
  • Moderate freeze: 25 degrees F to 28 degrees F – widely destructive effect on most vegetation, with heavy damage to fruit blossoms and tender and semi-hardy plants.
  • Severe freeze: 24 degrees F and colder – damage to most plants.

*Higher elevations in Hawaii do occasionally see at-or-near freezing temperatures but definitive frost dates are not available.

Courtesy of the National Climatic Data Center, National Oceanic and Atmospheric Administration.

Alabama
City First Fall Frost Last Spring Frost
Birmingham 11/9 4/2
Huntsville 11/4 3/30
Mobile 11/29 2/28
Montgomery 11/12 3/11
Alaska
City First Fall Frost Last Spring Frost
Anchorage 9/23 5/8
Fairbanks 9/8 5/15
Juneau 10/4 5/8
Nome 8/31 6/11
Arizona
City First Fall Frost Last Spring Frost
Flagstaff 9/22 6/9
Phoenix 12/16 1/30
Tucson 11/29 2/16
Yuma 12/20 1/24
Arkansas
City First Fall Frost Last Spring Frost
Fort Smith 10/31 3/31
Jonesboro 11/4 3/29
Little Rock 11/12 3/22
Texarkana 11/16 3/13
California
City First Fall Frost Last Spring Frost
Fresno 12/3 2/4
Red Bluff 12/1 2/22
Sacramento 12/4 2/10
San Bernardino 12/24 2/21
Tahoe City 9/19 6/18
Colorado
City First Fall Frost Last Spring Frost
Denver 10/4 4/30
Grand Junction 10/16 5/1
Julesburg 9/24 5/7
Pueblo 10/5 4/30
Connecticut
City First Fall Frost Last Spring Frost
Danbury 10/9 5/1
Hartford 10/9 4/26
Stamford 10/17 4/29
District of Columbia
City First Fall Frost Last Spring Frost
Washington D.C. 11/15 3/29
Delaware
City First Fall Frost Last Spring Frost
Dover 10/30 4/8
Lewes 11/5 4/6
Wilmington 10/30 4/10
Florida
City First Fall Frost Last Spring Frost
Jacksonville 12/3 2/26
Orlando 1/8 1/30
Tallahassee 11/17 3/22
Tampa 1/21 1/19
Georgia
City First Fall Frost Last Spring Frost
Atlanta 11/16 3/24
Augusta 11/7 3/30
Columbus 11/19 3/11
Savannah 11/25 3/1
Idaho
City First Fall Frost Last Spring Frost
Boise 10/8 5/5
Idaho Falls 9/20 5/27
Moscow 9/20 5/25
Salmon 9/20 5/25
Illinois
City First Fall Frost Last Spring Frost
Chicago 10/24 4/20
Mount Vernon 10/14 4/14
Quincy 10/22 4/10
Springfield 10/13 4/13
Indiana
City First Fall Frost Last Spring Frost
Evansville 11/3 4/3
Indianapolis 10/18 4/18
South Bend 10/19 4/26
Terre Haut 10/15 4/20
Indiana
City First Fall Frost Last Spring Frost
Evansville 11/3 4/3
Indianapolis 10/18 4/18
South Bend 10/19 4/26
Terre Haut 10/15 4/20
Iowa
City First Fall Frost Last Spring Frost
Cedar Rapids 10/6 4/25
Des Moines 10/12 4/20
Fort Dodge 10/4 4/29
Sioux City 10/3 4/26
Kansas
City First Fall Frost Last Spring Frost
Garden City 10/11 4/27
Great Bend 10/19 4/13
Independence 10/25 4/8
Topeka 10/11 4/19
Kentucky
City First Fall Frost Last Spring Frost
Ashland 10/13 5/4
Lexington 10/25 4/15
Mayfield 10/21 4/17
Murray 10/28 4/5
Louisiana
City First Fall Frost Last Spring Frost
Alexandria 11/19 3/6
Baton Rouge 11/29 2/26
Monroe 11/15 3/3
Shreveport 11/18 3/10
Maine
City First Fall Frost Last Spring Frost
Augusta 10/8 4/27
Bangor 10/7 5/7
Portland 10/6 5/2
Presque Isle 9/20 4/21
Maryland
City First Fall Frost Last Spring Frost
Baltimore 10/29 4/11
Frederick 10/30 4/9
Salisbury 10/30 4/5
Massachusetts
City First Fall Frost Last Spring Frost
Boston 11/7 4/7
New Bedford 11/2 4/13
Worcester 11/14 4/26
Michigan
City First Fall Frost Last Spring Frost
Cheboygan 10/10 5/18
Detroit 10/17 4/26
Grand Rapids 10/8 5/5
Marquette 10/13 5/11
Minnesota
City First Fall Frost Last Spring Frost
Baudette 9/21 5/16
Duluth 10/17 5/15
Minneapolis 10/5 4/30
Willmar 10/1 4/30
Mississippi
City First Fall Frost Last Spring Frost
Greenville 11/17 3/9
Hattiesburg 11/19 3/12
Jackson 11/9 3/23
Tupelo 10/28 4/5
Missouri
City First Fall Frost Last Spring Frost
Jefferson City 10/18 4/13
Kansas City 10/28 4/7
Poplar Bluff 10/28 4/4
St. Louis 10/29 4/7
Montana
City First Fall Frost Last Spring Frost
Billings 9/27 5/8
Bozeman 9/19 5/26
Glendive 9/29 5/2
Great Falls 9/22 5/17
Helena 9/18 5/19
Nebraska
City First Fall Frost Last Spring Frost
Grand Island 10/8 4/26
North Platte 10/4 5/5
Omaha 10/12 4/21
Scottsbluff 9/27 5/3
Nevada
City First Fall Frost Last Spring Frost
Elko 10/10 6/9
Ely 9/6 6/18
Las Vegas 11/27 2/16
Reno 10/3 5/21
New Hampshire
City First Fall Frost Last Spring Frost
Berlin 9/21 5/20
Concord 9/21 5/20
Keene 9/26 5/13
Nashua 10/3 5/7
New Jersey
City First Fall Frost Last Spring Frost
Atlantic City 11/11 3/31
Cape May 11/6 4/6
New Brunswick 10/20 4/20
Newark 11/7 4/3
New Mexico
City First Fall Frost Last Spring Frost
Albuquerque 10/28 4/16
Carlsbad 11/3 4/3
Santa Rosa 10/22 4/19
Truth or Consquences 11/3 4/6
New York
City First Fall Frost Last Spring Frost
Albany 10/3 5/2
Buffalo 10/19 4/24
Elmira 10/3 5/9
Lake Placid 9/11 6/7
New York City 11/15 4/1
Syracuse 10/13 4/28
North Carolina
City First Fall Frost Last Spring Frost
Asheville 10/25 4/12
Charlotte 11/9 4/11
Fayetteville 11/5 3/28
Raleigh-Durham 10/28 4/10
North Dakota
City First Fall Frost Last Spring Frost
Bismarck 9/21 5/14
Fargo 9/27 5/10
Grand Forks 9/27 5/10
Minot 9/28 5/9
Ohio
City First Fall Frost Last Spring Frost
Cincinnati 10/23 4/13
Cleveland 10/23 4/30
Columbus 10/13 4/26
Toledo 10/8 5/1
Oklahoma
City First Fall Frost Last Spring Frost
Beaver 10/14 4/18
Enid 11/3 4/4
Lawton 11/7 3/29
Tulsa 11/7 3/27
Oregon
City First Fall Frost Last Spring Frost
Baker 9/13 6/3
Eugene 10/19 4/22
Klamath Falls 9/18 6/7
Portland 11/15 3/23
Pennsylvania
City First Fall Frost Last Spring Frost
Erie 10/29 4/29
Lebanon 10/13 4/27
Philadelphia 11/4 4/6
Pittsburgh 10/17 4/29
Wilkes Barre 10/16 4/26
Rhode Island
City First Fall Frost Last Spring Frost
Kingston 10/3 5/8
Providence 10/22 4/16
South Carolina
City First Fall Frost Last Spring Frost
Charleston 11/25 3/9
Columbia 11/1 4/1
Florence 11/7 3/26
Greenville 11/4 4/4
South Dakota
City First Fall Frost Last Spring Frost
Hot Springs 9/20 5/16
Pierre 10/3 5/2
Sioux Falls 9/28 5/3
Watertown 9/25 5/10
Tennessee
City First Fall Frost Last Spring Frost
Chattanooga 11/4 4/1
Knoxville 10/22 4/16
Memphis 11/13 3/22
Nashville 10/28 4/6
Texas
City First Fall Frost Last Spring Frost
Amarillo 10/20 4/18
Dallas 11/25 3/3
Houston 12/20 2/8
San Antonio 11/25 2/28
Utah
City First Fall Frost Last Spring Frost
Cedar City 10/1 5/21
Logan 9/29 5/14
Moab 10/19 4/14
Salt Lake City 10/25 4/19
Vermont
City First Fall Frost Last Spring Frost
Burlington 10/1 5/8
Montpelier 10/1 5/11
Rutland 9/28 5/13
Virginia
City First Fall Frost Last Spring Frost
Charlottesville 10/31 4/7
Norfolk 11/23 3/20
Richmond 10/30 4/6
Roanoke 10/22 4/13
Washington
City First Fall Frost Last Spring Frost
Olympia 10/6 5/5
Seattle 11/17 3/10
Spokane 10/3 5/2
Vancouver 10/15 4/20
West Virginia
City First Fall Frost Last Spring Frost
Charleston 10/19 4/22
Martinsburg 10/19 4/19
Morgantown 10/18 4/30
Moundsville 10/19 4/30
Wisconsin
City First Fall Frost Last Spring Frost
Appleton 10/7 5/7
Eau Claire 9/29 5/7
Madison 10/2 5/10
Milwaukee 10/14 4/27
Wyoming
City First Fall Frost Last Spring Frost
Casper 9/19 5/22
Cheyenne 9/26 5/12
Gillette 9/22 5/18