Average First Frost Dates for Montana

About First Frost Dates in Montana

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

Map List Related Pages

Interactive Map of Average First Frost Dates for Montana

Click on the map for more information. Click on the icon in the lower right to view the map legend. Add additional data layers using the icon in the upper right corner.

List of Average First Frost Dates for Locations in Montana

LocationAverage First Frost Dates
AnacondaAugust 11 - 20
BelgradeSeptember 11 - 20
BigforkSeptember 21 - 30
BillingsOctober 1 - 10
BozemanSeptember 21 - 30
ButteAugust 21 - 31
Columbia FallsSeptember 11 - 20
EvergreenSeptember 11 - 20
Four CornersSeptember 11 - 20
Great FallsSeptember 21 - 30
HavreSeptember 21 - 30
HelenaSeptember 21 - 30
KalispellSeptember 11 - 20
LaurelOctober 1 - 10
LewistownSeptember 21 - 30
LivingstonSeptember 11 - 20
LockwoodOctober 1 - 10
Miles CityOctober 1 - 10
MissoulaSeptember 21 - 30
Orchard HomesSeptember 21 - 30
PolsonSeptember 21 - 30
SidneySeptember 21 - 30
WhitefishSeptember 11 - 20

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