simple-node-weather-api

var http = require('http'),
    url  = 'http://api.openweathermap.org/data/2.5/weather?q=Tampa,FL&units=imperial&appid=bd82977b86bf27fb59a04b61b657fb6f',
    port = 3000,
    tampaTemp;

function logData(data) {
    var json = JSON.parse(data);
    tampaTemp = json.main.temp;
    console.log(tampaTemp);
 }


function getWeather(callback) {
    var data = '';

    http.get(url, function(res) {
        res.setEncoding('utf8');
        res.on('data', function(chunk) {
            data+=chunk;
        });
        res.on('end', function(){
            callback(data);
            console.log('data logged');
        });
    });

}

getWeather(logData);

var server = http.createServer(function(req, res) {
    
    var temp = tampaTemp.toFixed(1);

    res.writeHead(200, {'Content-Type':'application/json'});
    res.write('{\n\t currentTemp: ' + temp + '\n}', 'utf8');
    res.end();

});

server.listen(port);