Organic Vegetable Gardening in An Urban Setting

Frost Data Tables for the United States

This data is supplied by the National Climatic Data Center in the States. You can find the Canadian table here. These dates reflect the first and last dates for a light freeze. A light freeze is considered to be a temperature between 30 and 32 degrees Fahrenheit. There is a 50% chance that a light frost can occur before or after these dates and that your local topography and weather may cause variations in these dates. A light freeze will harm only tender annuals and leave most other plants unscathed.

CityStateGrowing Season
(Length in Days)
Last Frost
Spring
First Frost
Fall
JuneauAK148May 8Oct. 4
MobileAL273Feb. 28Nov. 29
Pine BluffAR240Mar. 16Nov. 12
PhoenixAZ***
TucsonAZ324Jan 19Dec. 18
EurekaCA323Jan. 27Dec. 16
SacramentoCA296Feb. 10Dec. 4
San FranciscoCA***
DenverCO157April 30Oct. 4
HartfordCT166Apr. 26Oct. 9
WilmingtonDE202Apr. 10Oct. 30
MiamiFL***
TallahasseeFL239Mar. 22Nov. 17
AthensGA227Mar. 24Nov. 7
SavannahGA268Mar. 1Nov. 25
AtlanticIA148May 2Sept. 28
Cedar RapidsIA163Apr. 25Oct. 6
BoiseID147May 10Oct. 6
ChicagoIL187Apr. 20Oct. 24
SpringfieldIL182Apr. 13Oct. 13
IndianapolisIN181Apr. 17Oct. 16
South BendIN175Apr. 26Oct. 19
TopekaKS174Apr. 19Oct. 11
LexingtonKY192Apr. 15Oct. 25
MonroeLA256Mar. 3Nov. 15
New OrleansLA300Feb. 12Dec. 11
WorcesterMA170Apr. 26Oct. 14
BaltimoreMD200Apr. 11Oct. 29
PortlandME156May 2Oct. 6
LansingMI145May 10Oct. 3
MarquetteMI154May 11Oct. 13
DuluthMN124May 21Sept. 23
WillmarMN154Apr. 30Oct. 1
Jefferson CityMO188Apr. 13Oct. 18
ColumbusMS248Mar. 13Nov. 16
VicksburgMS240Mar. 20Nov. 16
Fort PeckMT141May 8Sept. 26
HelenaMT121May 19Sept. 18
FayettevilleNC222Mar. 28Nov. 5
BismarckND129May 14Sept. 21
BlairNE167Apr. 25Oct. 10
North PlatteNE137May 9Sept. 24
ConcordNH124May 20Sept. 21
NewarkNJ217Apr. 3Nov. 7
CarlsbadNM215Mar. 31Nov. 2
Los AlamosNM149May 11Oct. 8
Las VegasNV283Feb. 16Nov. 27
AlbanyNY153May 2Oct. 3
SyracuseNY168Apr. 28Oct. 13
AkronOH192Apr. 18Oct. 28
CincinnatiOH192Apr. 13Oct. 23
LawtonOK223Mar. 29Nov. 7
TulsaOK218Mar. 30Nov. 4
PendletonOR187Apr. 13Oct. 18
PortlandOR236Mar. 2 3Nov. 15
FranklinPA164May 6Oct. 17
WilliamsportPA168Apr. 30Oct. 15
KingstonRI147May 8Oct. 3
CharlestonSC260Mar. 9Nov. 25
ColumbiaSC214Apr. 1Nov. 1
Rapid CitySD140May 9Sept. 27
MemphisTN235Mar. 22Nov. 13
NashvilleTN204Apr. 6Oct. 28
AmarilloTX185Apr. 18Oct. 20
DentonTX243Mar. 18Nov. 16
San AntonioTX270Feb 28Nov. 25
Cedar CityUT133May 21Oct. 1
Spanish ForkUT167May 1Oct. 16
NorfolkVA247Mar. 20Nov. 23
RichmondVA206Apr. 6Oct. 30
BurlingtonVT147May 8Oct. 3
SeattleWA251Mar. 10Nov. 17
SpokaneWA153May 2Oct. 3
Green BayWI150May 6Oct. 4
SpartaWI133May 13Sept. 24
ParkersburgWV183Apr. 21Oct. 22
CasperWY120May 22Sept. 19

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