Will it frost?
Cover up in time
Frost warnings for your garden, so tender plants get covered before the cold bites
visit Will it frost?
the why
Will it frost? started as one piece of a private tool I built for my own garden, tracking what to plant, when to sow, and when to harvest, with notifications telling me when to put fleece down before a cold night. As I went round garden centres and chatted to neighbours, I kept hearing how much everyone worried about frost catching their plants out. So I pulled the frost-warning part out of my own tool and made it public.
who it's for
Gardeners growing tender plants who want a simple heads-up before a frost, in time to get the fleece on.
what it does
- Overnight frost forecast for the next five nights at your exact location
- Optional evening email alerts the night before frost is due
- Plain guidance on frost thresholds and when to act
- Free, no account, location stays in your browser
frequently asked
What is Will it frost?
A free tool that warns you when overnight frost is forecast for your garden, so you can cover tender plants before the cold arrives.How does it know when frost is coming?
It reads the overnight minimum temperature for your location from the Open-Meteo weather service across the next five nights and flags the ones where frost is likely.What counts as frost?
Ground frost can form when the air is around 3 to 4°C, since the ground cools faster than the air. Air frost is 0°C or below, and a hard frost is roughly -2°C or colder.When should I protect my plants?
Cover or move tender plants and pots before dusk on any night forecast near or below freezing. Frost is worst on clear, calm nights.Can it alert me automatically?
Yes. You can opt in to evening email alerts that arrive the night before frost is forecast.Is it free?
Yes, free with no account. Your location is processed in your browser only.
built by
Will it frost? is a project by Ben Huss, a founder and product engineer based in London and Somerset, UK, who designs and codes his own apps end to end. Founder of Immersi (360 video, VR and interactive tours) and CTO at Cobble (location-based audio walks).
