Here is a pre-view of something I've been working on for a while...
Weather Station Shootout!
On the left is the SwitchDocLabs WeatherPiArduino hooked up to an Esquilo via I2c. This one has a Bosch BMP180 Barometric Pressure and Temperature Sensor on board with all the options... a DS3232RTC which also contains an AT24C32 EEPROM and a temperature sensor, an Adafruit HTU21D Temperature and Humidity Sensor, an Adafruit MB85RC256 FRAM, an Adafruit ADS1015 12 bit ADC and an Embedded Adventures MOD-1016 AS3935 Lighning Sensor. I also have the SwitchDocLabs wind and rain measuring add-ons which plug into the two supplied RJ11 jacks.
On the right is the Sparkfun Weather Shield. I have added stackable headers and RJ11 jacks to it so I can connect the same wind and rain instruments as mentioned above. This shield includes the HTU21D Temperature and Humidity Sensor onboard along with an MPL3115A2 Barometric Pressure Sensor and an ALS-PT19 Light Sensor. I don't have the optional GP635T GPS module yet.
Anyway... what my plan is, is to try each one of these out and see which one will be my permanent Weather Station solution hooked up with the wind and rainfal sensors. The by-product of that will be write-ups of my experiences with them including tutorials featuring many of the separate components.
I'd really like to hear from anyone who is interested in these weather stations.