Frost dates

Frost dates in California


Typical last spring frost and first fall frost for 302 weather stations across California, from NOAA’s 1991–2020 climate normals.

Last spring frost

Jan 9 – May 16

Typical across California (middle: Feb 27)

First fall frost

Oct 9 – Dec 23

Typical across California (middle: Nov 29)

Your own yard can differ by weeks from the nearest town. Get frost dates for your exact spot →

By town

StationLast spring frostFirst fall frostFrost-free days
Adin RSMay 28Sep 29124
AlpineFeb 12Dec 24315
AlturasJun 3Sep 13102
Alturas Municipal AirportJun 3Sep 12101
Angwin Pacific Union CollegeApr 7Dec 5242
Antioch Pumping Plt #3Jan 12Dec 19341
Arcata Eureka AirportMar 8Nov 30267
Ash MountainMar 12Dec 9272
Auberry 2 NWMar 25Dec 3253
AuburnFeb 25Dec 5283
BakerFeb 14Nov 27286
Bakersfield 5 NWJan 31Dec 8311
Bakersfield AirportJan 17Dec 15332
Balch Pwr HouseFeb 23Dec 12292
BarstowFeb 22Nov 23274
Barstow Daggett AirportFeb 19Nov 26280
Ben Lomond #4Mar 25Nov 11231
Big Bar 4 EApr 16Oct 31198
Big Bear LakeMay 27Oct 4130
Big Sur StationFeb 13Dec 27317
Bishop AirportApr 29Oct 15169
Blue Canyon AirportMay 4Nov 4184
BlytheJan 25Dec 12321
Blythe AirportJan 5Dec 21350
Bodega 6 WSWJan 1Dec 31364
Bowman DamMay 12Oct 29170
Brawley 2 SWJan 16Dec 19337
Burbank Valley Pump PltJan 2Dec 26358
BurneyJun 3Sep 14103
ButtonwillowFeb 9Nov 26290
Cachuma LakeApr 11Nov 8211
Calaveras Big TreesMay 7Oct 28174
CalistogaMar 2Nov 23266
CallahanMay 20Oct 5138
Camp PardeeJan 22Dec 17329
Camp Pendleton McasFeb 16Dec 8295
CampoApr 30Oct 26179
Campo AsosApr 29Nov 1186
Canby 3 SWJun 1Sep 16107
Canyon DamMay 18Oct 8143
Carmel ValleyFeb 20Dec 8291
CecilvilleApr 27Oct 21177
CedarvilleMay 15Oct 1139
Cherry Valley DamMay 2Nov 4186
ChesterMay 28Sep 28123
Chico Univ FarmMar 4Nov 17258
China Lake NafMar 11Nov 12246
Chino AirportJan 17Dec 19336
Chiriaco SummitFeb 5Dec 17315
Clearlake 4 SEApr 10Nov 6210
CloverdaleFeb 25Dec 3281
CoalingaFeb 14Nov 30289
ColfaxApr 3Nov 24235
Colusa 2 SSWFeb 14Dec 1290
Concord Buchanan FieldJan 9Dec 14339
Concord Water PlantJan 7Dec 19346
Copco #1 DamMay 4Oct 21170
Corcoran Irrig DistFeb 15Nov 27285
CoveloApr 23Oct 19179
Crescent City 3 NNWMar 11Nov 23257
Crescent City Mcnamara AirportJan 30Dec 25329
CuyamacaApr 19Oct 27191
Davis 2 WSW Experiment FarmFeb 10Dec 1294
De SablaApr 17Nov 11208
Death Valley NpJan 1Dec 19352
DelanoJan 31Dec 8311
Desert Resorts Regional AirportFeb 7Dec 2298
Dobbins 1 SApr 1Nov 17230
DownievilleApr 28Oct 25180
Doyle 4 SSEMay 21Oct 1133
Dunsmuir Trtmt PlApr 23Oct 27187
East Park ReservoirApr 6Nov 10218
El CajonJan 6Dec 21349
El Capitan DamMar 19Dec 8264
El Centro 2 SSWJan 3Dec 27358
El Centro NafJan 6Dec 21349
El MirageMar 21Nov 12236
ElsinoreJan 28Dec 18324
Escondido #2Jan 2Dec 30362
Eureka Woodley IslandFeb 22Dec 7288
FairfieldJan 15Dec 14333
FairmontApr 6Nov 29237
Five Points 5 SSWFeb 27Nov 26272
Fort BidwellMay 26Oct 1128
Fort Bragg 5 NMar 2Dec 1274
Fort RossFeb 26Dec 27304
FremontJan 7Dec 22349
Fresno 5 NEJan 30Dec 11315
Fresno Yosemite International AirportJan 14Dec 14334
Friant Government CampMar 9Dec 1267
Georgetown RSApr 12Nov 21223
Gibraltar Dam #2Mar 20Nov 27252
GilroyFeb 24Nov 27276
GlennvilleMay 11Oct 17159
Grant GroveJun 1Oct 7128
Grass Valley #2Apr 10Nov 13217
GratonMar 20Nov 13238
Grizzly Creek SpMar 4Nov 22263
Groveland 2Apr 22Nov 2194
HaiweeApr 17Nov 1198
Half Moon BayFeb 6Dec 17314
Hanford 1 SFeb 7Dec 1297
Hanford Municipal AirportFeb 20Nov 23276
Hat CreekMay 29Sep 19113
Hayfield Pumping PltFeb 20Nov 30283
Hayward Air TerminalJan 2Dec 25357
HealdsburgFeb 15Dec 2290
HemetJan 10Dec 23347
Henshaw DamApr 18Oct 26191
Hesperia 2 EFeb 28Dec 1276
Hetch HetchyApr 16Nov 12210
Hollister 2Feb 19Dec 1285
Huntington LakeJun 1Oct 6127
Idyllwild Fire DeptMay 16Oct 24161
ImperialJan 4Dec 26356
Imperial County AirportJan 14Dec 24344
IndependenceMar 31Nov 9223
InyokernMar 9Nov 20256
Iron MountainJan 3Dec 31362
Jess ValleyJun 14Sep 1896
Johnson ValleyMar 1Nov 29273
Joshua TreeFeb 28Dec 1276
Julian CdfMar 27Dec 1249
KentfieldJan 16Dec 18336
Kern River Ph 3Apr 7Nov 11218
Kettleman CityFeb 19Nov 29283
King CityFeb 23Nov 22272
KlamathMar 16Nov 20249
Lake ArrowheadMay 5Nov 2181
Lake SolanoFeb 4Dec 5304
Lake SpauldingMay 22Oct 16147
Lancaster Wm J Fox FieldApr 3Nov 1212
Lava Beds Nat MonJun 6Sep 28114
Lee ViningMay 23Oct 9139
Lemon CoveFeb 5Dec 8306
Lemoore Reeves NASFeb 24Nov 22271
LindsayFeb 20Nov 30283
LivermoreFeb 15Dec 2290
Livermore Municipal AirportFeb 27Dec 1277
LodgepoleJun 8Sep 20104
LodiFeb 9Dec 5299
LompocJan 20Dec 19333
Loraine 5 NNEApr 22Nov 13205
Los BanosJan 26Dec 10318
Los Banos Det ResvJan 13Dec 14335
Los GatosFeb 2Dec 6307
MaderaFeb 18Nov 27282
Madera Municipal AirportFeb 12Nov 30291
Mammoth Lakes RSJun 10Sep 1799
Manzanita LakeJun 9Sep 21104
Markley CoveMar 6Nov 30269
Martinez WtpFeb 28Nov 22267
MarysvilleJan 15Dec 12331
Marysville Yuba County AirportFeb 11Nov 30292
MccloudMay 28Sep 30125
Mecca Fire StationJan 6Dec 22350
MercedMar 3Nov 24266
Merced 23 WSWMar 28Nov 14231
Merced Municipal AirportFeb 26Nov 25272
MineralJun 10Sep 1395
Mitchell CavernsMar 6Dec 8277
Modesto City County AirportJan 31Dec 5308
Moffett Federal AirfieldJan 6Dec 23351
MojaveMar 15Nov 17247
Montague Siskiyou County AirportMay 12Oct 8149
MontereyJan 3Dec 28359
MontereyJan 1Dec 30363
Monterey Peninsul AirportJan 2Dec 23355
Morongo Valley NFeb 25Dec 15293
Mount Diablo JunctionMar 8Dec 22289
Mount HamiltonMay 3Nov 18199
Mount Laguna #3Apr 22Nov 8200
Mount ShastaMay 15Oct 6144
Mount ShastaMay 6Oct 12159
Mount Wilson CbsApr 28Nov 15201
N Fk RSApr 24Nov 4194
Napa County AirportMar 5Nov 21261
Napa State HospitalFeb 12Dec 4295
Nevada CityApr 14Nov 20220
New Cuyama Fire StationApr 15Nov 4203
New Melones Dam HQFeb 20Dec 11294
NewarkJan 1Dec 27360
NewmanFeb 26Nov 29276
Oakland Metro International AirportJan 7Dec 23350
OccidentalJan 29Dec 30335
Oceanside Municipal AirportJan 23Dec 11322
OjaiMar 21Nov 15239
Ontario International AirportJan 4Dec 30360
Orick Prairie Creek ParkApr 12Nov 6208
OrlandFeb 25Dec 2280
OrleansMar 12Nov 26259
OrovilleJan 30Dec 13317
Oroville Municipal AirportJan 29Dec 7312
Pacific HouseApr 26Nov 2190
Paicines 4 WApr 14Nov 2202
Palm SpringsJan 1Dec 31364
PalmdaleMar 10Nov 19254
Palmdale AirportMar 18Nov 15242
Palo AltoFeb 1Dec 7309
Palomar Mountain ObsyApr 29Nov 18203
ParadiseFeb 7Dec 18314
Parker ResrvoirJan 7Dec 31358
Paso RoblesMar 15Nov 10240
Paso Robles Municipal AirportApr 4Nov 5215
PearblossomMar 13Dec 1263
Petaluma AirportFeb 28Nov 25270
Pinnacles NmApr 23Nov 3194
PlacervilleMar 31Nov 21235
Pomona/FairplexJan 8Dec 28354
PortervilleJan 20Dec 13327
PortolaJun 11Sep 1091
Potter Valley PowerhouseApr 8Nov 6212
Priest ValleyMay 8Oct 22167
QuincyMay 22Sep 25126
Ramona AirportMar 19Nov 23249
Ramona Fire DeptMar 4Dec 4275
RandsburgMar 19Nov 25251
Red Bluff Municipal AirportFeb 22Nov 29280
Redding 12 WNWMar 19Nov 22248
Redding Municipal AirportMar 3Nov 21263
RedlandsJan 27Dec 19326
Redwood CityJan 17Dec 12329
Richardson Gr SpMar 10Dec 1266
Riverside Fire Station 3Jan 9Dec 25350
Riverside Municipal AirportJan 9Dec 30355
S Lake FsApr 5Nov 3212
Sacramento 5 ESEJan 12Dec 16338
Sacramento Executive AirportFeb 2Dec 2303
Sacramento Metro AirportFeb 22Nov 24275
Saint HelenaFeb 3Dec 4304
Salinas #2Feb 4Dec 6305
Salinas Municipal AirportJan 29Dec 10315
San Diego Brown FieldJan 6Dec 31359
San Gregorio 2 SEMar 2Nov 25268
San JacintoJan 31Dec 10313
San JoseJan 2Dec 25357
San JoseJan 12Dec 22344
San Luis DamJan 27Dec 11318
San Luis Obispo AirportJan 31Dec 11314
San Luis Obispo PolyJan 16Dec 25343
San Pasqual Animal PkFeb 2Dec 7308
San Rafael Civic CtrJan 11Dec 21344
SandbergApr 15Nov 26225
Santa Barbara Municipal AirportJan 11Dec 16339
Santa CruzJan 29Dec 13318
Santa Maria Public AirportFeb 4Dec 13312
Santa RosaFeb 25Dec 1279
Santa Rosa Sonoma County AirportMar 2Nov 20263
ScotiaFeb 1Dec 19321
Shafter 6 EFeb 20Nov 23276
Shasta DamFeb 8Dec 28323
Skyline Ridge PreserveMar 21Dec 15269
So Entrance Yosemite NpMay 24Oct 10139
SonomaMar 2Nov 27270
SonoraApr 9Nov 9214
Stockton Fire Station 4Feb 5Dec 8306
Stockton Metro AirportFeb 6Dec 1298
Stony Gorge ReservoirApr 5Nov 13222
Stovepipe Wells 1 SWJan 4Dec 22352
Strawberry ValleyMay 4Oct 30179
Susanville 2 SWMay 16Oct 8145
Sutter Hill CdfMar 4Dec 11282
TaftJan 24Dec 17327
Tahoe CityJun 9Sep 25108
TahomaJun 4Oct 3121
Tehachapi 4 SEApr 28Oct 26181
Three Rivers Edison Ph 1Mar 16Nov 26255
Tracy CarbonaFeb 25Nov 26274
Tracy Pumping PltJan 19Dec 10325
Trinity Rvr HatcheryApr 23Oct 22182
TronaFeb 15Nov 28286
TulelakeJun 6Sep 14100
Turlock #2Jan 6Dec 20348
Tustin Irvine RchJan 5Dec 25354
Twentynine PalmsJan 24Dec 10320
Twitchell DamFeb 4Dec 4303
UkiahMar 19Nov 20246
Ukiah Municipal AirportMar 5Nov 21261
VacavilleJan 31Dec 11314
Vacaville Nut Tree AirportFeb 18Nov 28283
VallejoJan 17Dec 27344
Valley Ctr 1 NFeb 19Dec 1285
Verdi 2 WMay 9Oct 17161
VictorvilleMar 18Nov 11238
VisaliaJan 23Dec 13324
WascoJan 31Dec 5308
Watsonville Municipal AirportJan 31Dec 9312
Watsonville Wtr WksJan 28Dec 13319
WeavervilleMay 3Oct 11161
Whiskeytown ReservoirFeb 13Dec 13303
Willits 1 NEMay 5Oct 9157
Willows 6 WFeb 21Dec 6288
WintersFeb 18Nov 30285
Woodland 1 WNWFeb 7Dec 5301
Woodland Hills Pierce CollegeJan 24Dec 15325
Woodside Fire Station 1Feb 25Nov 25273
WrightwoodMay 16Oct 13150
Yosemite Park HQApr 21Oct 27189
Yosemite Village 12 WMay 12Nov 1173
YrekaApr 30Oct 18171
Yucca MesaFeb 16Dec 10297
Yucca ValleyMar 14Nov 28259

Each date is the median: in half of years the frost comes earlier, in half later. Frost here means a low of 32°F or colder at the station. Low spots and valleys often frost a week or two earlier than these dates; hillsides and city centers later.

Source: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020. The Field almanac also shows how often frost comes early or late, and a reanalysis reading for your exact location.

Frost dates for every state