The Bay13 weather station consists of 1-wire components from AAG Electronica, OneWireWeather, and a set of perl scripts that I've written. I am currently experimenting with sensor positions to try and reduce sensor lag time and offset from radiation from my house. As such, the current sensor readings are likely to be above the actual temperature. Relative humidity is a function of temperature and dew point temp.
Weather links:
Below are weather graphs for the past day: