Last frost date: your planting planner

This tool does not find or forecast your last frost. Enter a date from a local weather service or your own garden records. An average last frost date still carries a risk of later frost; check the forecast before planting.

Method and limitations

Add the selected number of days to your local reference date, including across month and year boundaries. The delay is your planning choice, not a safety threshold. The result is a date to review conditions, not a guarantee of frost-free weather.

Sources

No external reference is documented for this calculation; its method and limitations are described above.