Last Frost Date Norfolk County: Frost Dates, Late Frost Risk & Growing Season
When is the last spring frost and the first autumn frost in Norfolk County? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.
The frost season in Norfolk County
- Last frost (average): April 29
- In 1 year out of 10 it still freezes on May 13.
- First frost: October 20
- Frost-free season: 173 days
- Frost after 15 May: in 7 % of years
Frost days per month in Norfolk County
- January: 29.4 · -9 °C
- February: 27.5 · -9 °C
- March: 26.1 · -4 °C
- April: 12.9 · 1 °C
- May: 0.9 · 7 °C
- June: 0 · 13 °C
- July: 0 · 15 °C
- August: 0 · 14 °C
- September: 0.1 · 10 °C
- October: 3.4 · 5 °C
- November: 16.8 · 0 °C
- December: 28.4 · -5 °C
- Matched to the average lows of a weather station 14 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.