User kkingsbury over at Instructables has put together a great DIY weather station powered by a Raspberry Pi and even with the few switches and sensors that were required, this entire GPS-based, WiFi-enabled, web-serving weather station probably cost less than $125. It looks like a fun project that I will be exploring this summer. Take a look and see what the Raspberry Pi can do for you!
Fast forward about a month and I have a basic working system. This is a complete Raspberry Pi Weather system with just the base Raspberry Pi hardware, camera, and some assorted analog and digital sensors to make our measurements. No buying pre-made anemometers or rain gauges, we are making our own!