Airport weather database with number of days below mins?

[Fearless Tower]

Anyone know of an online database that will allow you to look up annual weather data for an airport?

I'm specifically trying to find the number of days per year that a given airport with no CAT II/III approach reported weather below ILS mins.

 

[sferguson524]

I would be willing to wager something could be built using historic METAR data.. Paging @SixPapaCharlie