T.Jackson...your solution is boring. I think the whole point here is to learn some new stuff and MAKE some cool electronics. I am in the process of doing something very similar to your project using commercial off the shelf (COTS) products and XBEE.

Checkout http://fascinatingelectronics.com/weatherinst.html for a great and cheap anememometer and wind vane.

Tie this to some www.hoperf.com barometer and temperature sensors

Throw in a pic to talk to these and an 2XBEE's for serial wireless and you are good to go my friend!

That or hack up an aagelectonics.com 1 wire station and you are also in great shape.