First and last frost dates for US locationsNOAA climate normals · 1991–2020
USFrostDates

First and last frost dates in Idaho

Compare median spring and fall freeze dates for 61 locations in Idaho. Open a city guide for station details and risk levels.

Median freeze dates for cities in Idaho
LocationLast spring freezeFirst fall freezeDays betweenGuide
AberdeenMay 21September 20122 days
American FallsMay 4October 8157 days
AmmonMay 9October 1145 days
AshtonMay 21September 21123 days
BellevueMay 13October 2142 days
BlackfootMay 5October 3151 days
Bonners FerryApril 30October 4157 days
BuhlApril 25October 15173 days
BurleyMay 7October 4150 days
ChallisMay 14September 25134 days
Coeur d'AleneApril 22October 18179 days
Dalton GardensApril 22October 18179 days
DriggsJune 13September 988 days
EmmettApril 30October 17170 days
Fort HallMay 20September 20123 days
FruitlandApril 22October 9170 days
HaileyMay 13October 2142 days
HansenMay 6October 3150 days
HaydenApril 22October 18179 days
HeyburnMay 7October 4150 days
HomedaleApril 24October 9168 days
Idaho FallsMay 9October 1145 days
IonaMay 9October 1145 days
JeromeMay 2October 14165 days
KamiahApril 29October 5159 days
KimberlyMay 6October 3150 days
Lewiston OrchardsApril 6October 26203 days
LincolnMay 9October 1145 days
Malad CityMay 22September 20121 days
MarsingApril 23October 18178 days
McCallJune 10September 1092 days
MontpelierJune 17September 378 days
MorelandMay 5October 3151 days
Mountain HomeMay 2October 8159 days
NampaApril 29October 13167 days
New PlymouthApril 22October 9170 days
OrofinoApril 20October 20183 days
OsburnMay 5October 2150 days
ParmaApril 27October 9165 days
PaulMay 6October 6153 days
PayetteApril 19October 20184 days
PinehurstMay 14September 26135 days
PlummerMay 11October 5147 days
PocatelloMay 2October 11162 days
PonderayMay 8September 28143 days
Post FallsApril 22October 18179 days
PrestonMay 16September 28135 days
Priest RiverMay 12September 21132 days
RexburgMay 15September 23131 days
RigbyMay 9October 5149 days
RupertMay 6October 6153 days
Saint AnthonyMay 17September 22128 days
Saint MariesMay 3October 4154 days
SalmonMay 17September 24130 days
SandpointMay 8September 28143 days
ShelleyMay 23September 20120 days
ShoshoneApril 24October 16175 days
Sugar CityMay 29September 13107 days
Twin FallsApril 30October 9162 days
WeiserApril 23October 13173 days
WilderApril 24October 9168 days

Median dates at nearby stations, using a 32°F (0°C) threshold. The interval is calculated from the two median dates, not a guarantee of frost-free weather. Read the methodology.