Last Frost Date Sault Ste. Marie: Frost Dates, Late Frost Risk & Growing Season
When is the last spring frost and the first autumn frost in Sault Ste. Marie? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.
The frost season in Sault Ste. Marie
- Last frost (average): May 15
- In 1 year out of 10 it still freezes on May 25.
- First frost: October 18
- Frost-free season: 157 days
- Frost after 15 May: in 47 % of years
Frost days per month in Sault Ste. Marie
- January: 30.6 · -13 °C
- February: 28 · -13 °C
- March: 28.9 · -8 °C
- April: 21.1 · -2 °C
- May: 4.1 · 4 °C
- June: 0 · 9 °C
- July: 0 · 12 °C
- August: 0 · 13 °C
- September: 0.1 · 10 °C
- October: 4.8 · 4 °C
- November: 19.7 · -2 °C
- December: 29.1 · -8 °C
- No weather station nearby: plain grid values, which are often a little too cold – dates may therefore be late.
- 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.