Last Frost Date West Hartford: Frost Dates, Late Frost Risk & Growing Season
When is the last spring frost and the first autumn frost in West Hartford? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.
The frost season in West Hartford
- Last frost (average): April 16
- In 1 year out of 10 it still freezes on April 27.
- First frost: October 21
- Frost-free season: 188 days
- Frost after 15 May: in 0 % of years
Frost days per month in West Hartford
- January: 27.3 · -7 °C
- February: 24.8 · -6 °C
- March: 20.7 · -2 °C
- April: 6.2 · 4 °C
- May: 0 · 9 °C
- June: 0 · 14 °C
- July: 0 · 18 °C
- August: 0 · 17 °C
- September: 0 · 12 °C
- October: 2.9 · 6 °C
- November: 14.8 · 1 °C
- December: 25.4 · -4 °C
- Matched to the average lows of a weather station 16 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.