"Keith (Southend)" wrote in message
...
This November I only had two 5 minute logs (10 minutes) of 0.0°C, is this
classed as an air frost or should it be -0.1°C?

My thinking is not, so no air frost reported for me for the whole month.

Keith (Southend)

Yes Keith, temperature needs to be below zero to warrant a frost

--
Bernard Burton
Weather data and satellite images at:
www.woksat.info/wwp.html