Last Frost Date Fort McMurray: Frost Dates, Late Frost Risk & Growing Season

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

The frost season in Fort McMurray

Last frost (average): May 23
In 1 year out of 10 it still freezes on June 4.
First frost: September 15
Frost-free season: 116 days
Frost after 15 May: in 73 % of years

Frost days per month in Fort McMurray

January: 30.9 · -22 °C
February: 28.3 · -20 °C
March: 30.8 · -13 °C
April: 24.1 · -4 °C
May: 8.3 · 3 °C
June: 0.3 · 8 °C
July: 0 · 11 °C
August: 0.2 · 9 °C
September: 5.7 · 4 °C
October: 23.1 · -3 °C
November: 29.7 · -12 °C
December: 31 · -20 °C

Matched to the average lows of a weather station 13 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.