Last Frost Date Vacaville: Frost Dates, Late Frost Risk & Growing Season
When is the last spring frost and the first autumn frost in Vacaville? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.
The frost season in Vacaville
- Last frost (average): January 28
- In 1 year out of 10 it still freezes on March 6.
- First frost: December 5
- Frost-free season: 311 days
- Frost after 15 May: in 0 % of years
Frost days per month in Vacaville
- January: 2.9 · 4 °C
- February: 0.8 · 5 °C
- March: 0.1 · 7 °C
- April: 0 · 8 °C
- May: 0 · 11 °C
- June: 0 · 14 °C
- July: 0 · 15 °C
- August: 0 · 15 °C
- September: 0 · 14 °C
- October: 0 · 10 °C
- November: 0.9 · 6 °C
- December: 3.7 · 4 °C
- Matched to the average lows of a weather station 46 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.