Cet Question (mr Data?) Sub-zero Cet Temp In 30 Day Period

[WhiteFox]

Always lots of emphasis on months where the CET is sub-zero and as we know it's always been a pretty rare occurrence.

However, the weather does not recognise months, so I was wondering if anyone had any details on 30 day periods where the CET average is below zero? I'd assume that it is also pretty rare, but it would be interesting to see how many such periods have occurred over the years.

Edited January 10, 2012 by WhiteFox

[WhiteFox]

Some of the coldest c. 30 day periods I can find (since 1772)

Dec 29th 1813 - Jan 27th 1814 -3.3 degC

Jan 1st - 30th 1795 -3.1 degC

Dec 28th 1962 - Jan 26th 1963 -2.7 degC

Jan 22nd - Feb 21st 1895 -2.6 degC

Jan 7th - Feb 6th 1963 -2.6 degC

Jan 7th - Feb 6th 1838 -2.5 degC

Please feel free to add or take away from this list. I haven't spend a great deal of time on it, so there may be omissions/mistakes

Thanks Ferryhill. I realise it's a large ask! I don't have access to the daily CET figures myself otherwise I'd stick it in a SQL database and fire some code at it!

[WhiteFox]

If you have access to the figures I'd happily write an application to provide averages based on a date range....