On 16/01/15 12:45, Dave Cornwell wrote:
Personally, in January I would historically not consider it a cold spell
till daily maxima fell to around 2-3C or less for more than 3
consecutive days (roughly, in my own mind). Night time frosts might come
into play as well. Perhaps in this clearly warmed period of our UK
climate I should raise that by a degree or two to keep up with the
youngsters and the media.
Dave,S.Essex. 6.2C, Vaguely chilly.

Three or more days below zero for me.

Three days at 2 or 3° is just winter.

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