Angular weather service using openweathermap.org -- not fully tested. (uses gist: https://gist.github.com/robhurring/6074128)

README.md

This is just a snippet. For a working example (without geolocation) see JSFidde: http://jsfiddle.net/robhurring/fKbka/light/

angular-weather-service.js

app.factory("WeatherService", ['$q', '$http', function($q, $http) {
  var SERVICE_ENDPOINT = "http://api.openweathermap.org/data/2.5";
  var JSON_P_SUFFIX = "&callback=JSON_CALLBACK"

  var request = function(path) {
    var deferred = $q.defer();

    $http.jsonp(SERVICE_ENDPOINT + path + JSON_P_SUFFIX).
      success(function(data, status, headers, config){
        deferred.resolve(data);
      }).
      error(function(data, status, headers, config){
        deferred.reject(data);
      })

    return deferred.promise;
  };

  var normalizeDays = function(days) {
    var d = days;

    if(days === undefined || days === null || parseInt(days) < 1) d = 7;
    if(d > 14) d = 14; // max 14 days

    return d;
  };

  return {
    current: {
      byPosition: function(lat, lng){
        var path = "/weather?lat="+lat+"&lon="+lng;
        return request(path);
      },
      byCity: function(cityName){
        var path = "/weather?q="+cityName;
        return request(path);
      },
      byCityId: function(cityId){
        var path = "/weather?id="+cityId;
        return request(path);
      }
    },
    forecast: {
      byPosition: function(lat, lng, days, units) {
        var u = units || 'imperial'; // internal, metric, or imperial
        var d = normalizeDays(days);

        var path = "/forecast/daily?lat="+lat+"&lon="+lng+"&cnt="+d+"&mode=json";
        return request(path);
      },
      byCity: function(cityName, days, units) {
        var u = units || 'imperial'; // internal, metric, or imperial
        var d = normalizeDays(days);

        var path = "/forecast/daily?q="+cityName+"&cnt="+d+"&mode=json";
        return request(path);
      },
      byCityId: function(cityId, days, units) {
        var u = units || 'imperial'; // internal, metric, or imperial
        var d = normalizeDays(days);

        var path = "/forecast/daily?id="+cityId+"&cnt="+d+"&mode=json";
        return request(path);
      }
    }
  }
}]);

usage.js

app.controller('MainCtrl', [
  '$scope',
  'GeolocationService',
  'WeatherService',
  function ($scope, $window, geolocation, weather){

  $scope.position = null;
  $scope.weather = null
  $scope.forecast = null;
 
  // SEE: https://gist.github.com/robhurring/6074128
  geolocation().then(function(position) {
    $scope.position = position;
  });

  $scope.$watch('position', function(position){
    if(!position) return;

    weather.current.byPosition(position.coords.latitude, position.coords.longitude).then(function(data){
      $scope.weather = data;
    });

    weather.forecast.byPosition(position.coords.latitude, position.coords.longitude).then(function(data){
      $scope.forecast = data;
    });
  });

}]);