On 30 Jan, 11:13, Graham wrote:
Met O 253m
Max 3.7C min -1.7C grass -9.7C rain 0.1mm sun 29th nil

Whoops, grass -0.9C

Ken was your grass temperature almost a degree warmer than your air
temperature?
--

Hi, Graham,

Yes, often is higher in fog. In fact today, trees and hedges are
coated in rime but most surfaces are wet.

Best wishes,
Ken