Last Frost Date Pocatello: Frost Dates, Late Frost Risk & Growing Season

When is the last spring frost and the first autumn frost in Pocatello? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.

The frost season in Pocatello

Last frost (average): May 27
In 1 year out of 10 it still freezes on June 17.
First frost: September 22
Frost-free season: 116 days
Frost after 15 May: in 67 % of years

Frost days per month in Pocatello

January: 30 · -9 °C
February: 26.5 · -6 °C
March: 24.3 · -2 °C
April: 14.8 · 0 °C
May: 4.6 · 4 °C
June: 0.6 · 8 °C
July: 0 · 12 °C
August: 0.1 · 10 °C
September: 2.3 · 6 °C
October: 14.4 · 0 °C
November: 26.3 · -4 °C
December: 29.8 · -8 °C

Matched to the average lows of a weather station 16 km away – accurate to about ±1–2 weeks.
Daily minimum temperatures 2 m above ground over 30 years (1991–2020), NASA POWER; station data: Deutscher Wetterdienst (CC BY 4.0). Ground frost can form while the air at 2 m is still +2 to +3 °C.