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

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

The frost season in Saguenay

  • Last frost (average): May 14
  • In 1 year out of 10 it still freezes on May 26.
  • First frost: October 4
  • Frost-free season: 140 days
  • Frost after 15 May: in 43 % of years

Frost days per month in Saguenay

  • January: 30.7 · -20 °C
  • February: 28.1 · -19 °C
  • March: 29.7 · -12 °C
  • April: 23.1 · -3 °C
  • May: 5.4 · 4 °C
  • June: 0.1 · 10 °C
  • July: 0 · 13 °C
  • August: 0 · 12 °C
  • September: 0.9 · 7 °C
  • October: 11.9 · 1 °C
  • November: 25.7 · -5 °C
  • December: 30.5 · -14 °C
  • Matched to the average lows of a weather station 11 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.