Paris, France
Frost date estimator: Paris
Historical frost observations, the estimated growing season and the next 48-hour frost signal.
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Frost in Paris: the observed record
Means over 2016–2025. The cautious date is the latest frost recorded in that period — use it for a decision you cannot undo.
Last spring frost (mean)5 April
Last spring frost (cautious)30 April
First autumn frost (mean)21 November
First autumn frost (cautious)4 November
Frost-free season230 days
Years in the record10 (frost-free: 0)
These come from the ERA5 reanalysis on a roughly 9 km grid, so they describe the area rather than your plot. A hollow, a frost pocket or an exposed site regularly runs several degrees colder, so use the cautious date for a decision you cannot undo.
How to read the result
The result uses the location coordinates and the data available when calculated. Treat it as a signal to check conditions on site: a garden microclimate can differ from the weather-model grid cell.