Install Node.js - nprail/WeatherLCD-RPi GitHub Wiki
To install Node.js on a Raspberry Pi, run these commands.
wget https://nodejs.org/dist/v4.3.2/node-v4.3.2-linux-armv6l.tar.gz
tar -xvf node-v4.3.2-linux-armv6l.tar.gz
cd node-v4.3.2-linux-armv6l
Copy to /usr/local
sudo cp -R * /usr/local/
Run node -v
to test it. If it worked, it should return v4.3.2