Will it frost tonight?

Pick a location and see the frost risk for the next 16 nights, which crops are at stake, and the average frost dates where you are. Free, no sign-up.

Why these numbers are worth trusting

The forecast comes straight from Open-Meteo, and the typical frost dates are averaged from the actual sub-zero nights in the last 5 years of daily records — not from monthly averages, which smooth frost away entirely. The crop thresholds are the same numbers our gardening game runs on: each crop has a real damage point and a real kill point.

One honest caveat: weather data is gridded, so it flattens terrain. Hollows, rooftops and open beds freeze earlier than any grid figure suggests. Treat these dates as a guide, not a guarantee.

Want to watch it happen?

We built a gardening game where the weather is your weather. Plant a tomato and it grows on your city's real forecast, day by day — one game day is one real day. When a frost like the one above arrives, it really does bite the plants.