GreenlySan Marino: frost dates by city
The average last spring frost and first autumn frost in San Marino, from ten years of weather.
| City | Last spring frost | First autumn frost | Frost-free days | Soil at 10 °C | Tomato: planting out | Places to buy (OpenStreetMap) |
|---|---|---|---|---|---|---|
| San Marino | 9 February | 12 December | 306 days | 7 March | 25 April – 22 August | 19 |
Places: © OpenStreetMap contributors, ODbL.
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.
