Average Last Frost Dates for Idaho

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Last Frost Dates were calculated using daily climate data from the period between 1991-2020.

List of Average Last Frost Dates for Locations in Idaho

LocationAverage Last Frost Dates
AmmonJun. 1 - Jun. 10
BlackfootJun. 1 - Jun. 10
BoiseMay 11 - May 20
BurleyMay 21 - May 31
CaldwellMay 11 - May 20
ChubbuckJun. 11 - Jun. 20
Coeur d'AleneMay 21 - May 31
EagleMay 11 - May 20
EmmettMay 21 - May 31
FruitlandMay 11 - May 20
Garden CityMay 11 - May 20
HaileyJun. 11 - Jun. 20
HaydenMay 21 - May 31
Idaho FallsJun. 1 - Jun. 10
JeromeMay 21 - May 31
KunaMay 11 - May 20
LewistonApr. 21 - Apr. 30
MeridianMay 21 - May 31
MiddletonMay 11 - May 20
MoscowJun. 1 - Jun. 10
Mountain HomeMay 21 - May 31
NampaMay 21 - May 31
PayetteMay 11 - May 20
PocatelloJun. 1 - Jun. 10
Post FallsMay 21 - May 31
PrestonMay 21 - May 31
RathdrumMay 21 - May 31
RexburgJun. 1 - Jun. 10
RigbyJun. 1 - Jun. 10
RupertMay 21 - May 31
SandpointJun. 1 - Jun. 10
StarMay 11 - May 20
Twin FallsMay 21 - May 31
WeiserMay 1 - May 10

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