We shared a lot of Weather Stations and with Arduino too. This project isn't amazing news, but it can catche some arduino guys.

Weather Station is based on Arduino Uno Rev3 with a lot of sensors like DHT11 (temperature and humidity sensor), BMP185 (barometer sensor), rain drop sensor and soil humidity sensor.

The tutorial thoroughly describes steps for making weather station so it's suitable for novice arduino guys.
The data are send to PC through virtual COM port.
On the website are source code for this project.

Home website: http://www.instructables.com/id/Arduino-Weather-Station-AWS/?ALLSTEPS

Originally shared http://www.embedds.com/arduino-based-weather-station-with-multiple-sensors/