Where can I find sites for past weather & climatological summaries?

Many sites have been developed which supply such data & the list below must only be regarded as a 'snapshot', but ones which I certainly find of use:

a WMO sponsored site for basic climatological information:
http://www.worldweather.org/

a comprehensive site provided by Canty and Associates of Virginia, USA:
http://www.weatherbase.com/

a fine site for climate, recent history etc., plus lots of other useful information - very well worth 'bookmarking' for general use:
http://www.weatheronline.co.uk/

another great site with plenty of information, not just climatology:
http://weather.yahoo.com/

and one more, the Buttle and Tuttle site at:
http://www.worldclimate.com/climate/index.htm

and for a full listing of world record temperatures, see:
http://www.mherrera.org/temp.htm