In article ,
Dave.C writes:
I don't know if this helps as a starting point - you may be able to contact
them personally. - Data for Manchester Airport.
http://homepage.ntlworld.com/brenda.scragg/wxmthjun.htm

1991 to 2003 - no snow laying at Manchester airport.

Should that perhaps read "no. of days snow lying..."? I find it hard to
believe that they could have gone for such a prolonged period with no
snow lying.
--
John Hall
"The power of accurate observation is commonly called cynicism
by those who have not got it."
George Bernard Shaw