This is a list of all the parts you will need in order to complete this project. Most of these are available at high-street electronic components stores and online distributors:
A Raspberry Pi
A Wi-Fi dongle
A long micro USB cable
A clear/translucent Tupperware box
A DHT11 (www.adafruit.com/product/386) or DHT22 (www.adafruit.com/products/385) sensor
BMP180 (www.adafruit.com/product/1603)
A Maplin anemometer (wind speed sensor) (www.maplin.co.uk/p/maplin-replacement-wind-speed-sensor-for-n96fy-n82nf)
A Maplin wind direction sensor (www.maplin.co.uk/p/maplin-replacement-wind-direction-sensor-for-n96fyn96gy-n81nf)
A Maplin rain gauge (www.maplin.co.uk/p/maplin-replacement-rain-gauge-for-n25frn96fyn96gy-n77nf)
An Arduino Uno (www.adafruit.com/product/50)
A selection of resistors (www.maplin.co.uk/p/e12-025w-resistor-610-piece-pack-fa08j)
A 1 inch square section of a stripboard (www.maplin.co.uk/p/veroboard-copper-stripboard-100x160mm-a62rl)
A strip of...