Last Frost Date Oak Park: Frost Dates, Late Frost Risk & Growing Season
When is the last spring frost and the first autumn frost in Oak Park? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.
The frost season in Oak Park
- Last frost (average): April 3
- In 1 year out of 10 it still freezes on April 11.
- First frost: November 10
- Frost-free season: 221 days
- Frost after 15 May: in 0 % of years
Frost days per month in Oak Park
- January: 29.8 · -7 °C
- February: 26.1 · -6 °C
- March: 17.2 · -1 °C
- April: 2.1 · 5 °C
- May: 0 · 10 °C
- June: 0 · 16 °C
- July: 0 · 19 °C
- August: 0 · 18 °C
- September: 0 · 14 °C
- October: 0.3 · 7 °C
- November: 11.4 · 1 °C
- December: 26.7 · -4 °C
- Matched to the average lows of a weather station 12 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.