My first 20C day today at 24.5C, easily beating the previous
record (from yesterday) of 18.3C.

Now this got me thinking, there must have been a fair number
of places in the country today whose first 20C day was also
their first 25C day. Now to me this seams like a statistically
rather unlikey feat but perhaps it's more common than I
might imagine. Is there any data on this interesting (though
admittedly rather obscure) event?

Col
--
Bolton, Lancashire.
160m asl.