Free calculator
Is the soil warm enough?
Recent soil temperature at 6 cm, with 24-hour and 7-day context. Use it alongside moisture and the forecast, not instead of them.
Recent soil temperature
Enter a ZIP code or share your location to see recent soil temperature.
Where the data comes from
Temperature is requested from Open-Meteo, a public weather API, for the coordinates behind your ZIP code or your shared location. The reading is modelled at 6 cm (about 2.4 in) below the surface. It is not a sensor buried in your lawn.
How to use it
Soil temperature is a useful signal for seed germination and pre-emergent timing, but it varies with sun, soil type, mulch, and moisture. A south-facing sandy slope can be several degrees warmer than a shaded low spot a few streets away. The 7-day average is often more useful than a single hour.
When data is unavailable
If the weather service cannot return a reading, the tool says so. It does not substitute a guess. Try a coordinate entry or come back later.
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