The last frost in Glasfynydd (Usk Reservoir), Wales was the night of the Wednesday 22/02/2023 to Thursday 23/02/2023, with a minimum air temperature of 2.0°C (35.6°F), and therefore a probable minimum ground temperature of around -1.0°C (30.2°F).
There are no frosts forecast for Glasfynydd (Usk Reservoir) in the next 5-days.