The last frost in Foel Grach, Wales was the night of the Wednesday 22/02/2023 to Thursday 23/02/2023, with a minimum air temperature of -3.0°C (26.6°F), and therefore a probable minimum ground temperature of around -6.0°C (21.2°F).
There are no frosts forecast for Foel Grach in the next 5-days.