Although many parts of the UK have already recorded their first air frost this part of the capital, being so built up and close to the City, remains frost free.
Although many may think that frosts are getting later a look back through local statistics to 1959 shows these events are very random.
The scatter graph below illustrates this.
Taking out the winters of 1974/75 and 2002/03, which didn’t see frosts until February and January respectively, the scatter can be seen better here.
The median for the first frost is November 6th with an average minimum of -1.4C.
October frosts can be a precursor to a mild winter much in the same way that heavy October snowfall in the Alps has lead to an awful season. But there are exceptions, as happened in 2008/09.
* To record an air frost the temperature must fall to -0.1C or lower.