I operate a Dvais proVantage weather station which is setup to dump data every 5 min. The sensors are located on my main antenna mast, at a height of about 20 feet. My weather station also dumps data to the CWOP/APRS weather network and can be found by seraching for it on aprs.fi. The station updates every 10 min.
You can also subscribe to an RSS feed of the current conditions displayed on this page. Click HereTo get the link.