I learned of this oldweather.org through an article in Scientific American's February 2012 issue .
I have a great interest in Weather for several reasons: I taught Science for 38 years in the Williamsville (near Niagara Falls, NY) School District. I have been part of the Natl Weather Service Spotters Net for 18 years - measuring snow and rain and reporting it each day from a registered station in my back yard, and as a sailor on Lake Ontario I DEPEND on weather. The logs are fun, I'm used to keeping my OWN.
About a year ago I got 'convinced' to transcribe and edit logs and have spent most of my OW time there lately.
BTW - anyone with an interest in 'realtime' weather rain/snow/ maps, etc. all over USA - check out www.CoCoRaHS.org
where many of us report daily. My Station ID is NY-NG-2.