GreenlyChile: frost dates by city
The average last spring frost and first autumn frost in 3 cities of Chile, from ten years of weather. The last spring frost comes earliest in Concepción and latest in Santiago.
| City | Last spring frost | First autumn frost | Frost-free days |
|---|---|---|---|
| Concepción | 19 July | 13 June | 329 days |
| Valparaíso | 6 August | none in ten years | — |
| Santiago | 9 August | 18 June | 313 days |
Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.