WeatherLogger-Yesterday.gs

function weatherLogger() {
  var url = "http://api.wunderground.com/api/XXXXXXXXXXX/yesterday/q/STATE/CITY.json"
  var response = UrlFetchApp.fetch(url);
  var data = JSON.parse(response);
  var summary = data.history.dailysummary[0];
  var slength = summary.length;
  var newFileData = summary["date"]["pretty"] + "\n";
  newFileData += "\n";
  newFileData += "High temp: " + summary["maxtempi"];
  newFileData += "\n";
  newFileData += "Low temp: " + summary["mintempi"];
  newFileData += "\n";
  newFileData += "Avg temp: " + summary["meantempi"];
  newFileData += "\n";
  newFileData += "Rain: " + summary["rain"];
  newFileData += "\n";
  newFileData += "Snow: " + summary["snow"] + " " + summary["snowfalli"] + " " + summary["snowdepthi"];
  newFileData += "\n";
  newFileData += "Precipitation: " + summary["precipi"];
  newFileData += "\n";
  newFileData += "Growing Degree Days: " + summary["gdegreedays"];
  newFileData += "\n";
  newFileData += "Max Wind Speed: " + summary["maxwspdi"] + "mph";
  newFileData += "\n";
  newFileData += "Avg Wind Speed: " + summary["meanwindspdi"] + "mph " + summary["meanwdire"];
  newFileData += "\n";
  newFileData += "Humidity: " + summary["humidity"];
  newFileData += "\n";
  newFileData += "\n";
  newFileData += "Raw Data:";
  
  for (var key in summary) {
    var dataToLog = key + ": " + JSON.stringify(summary[key]);
    if (newFileData == "") {
      newFileData = dataToLog;
    }
    else {
      newFileData += "\n";
      newFileData += dataToLog;
    };
  };
  var today = new Date();
  var d = new Date(today);
  d.setDate(today.getDate() - 1);
  var y = d.getFullYear();
  var m = d.getMonth();
  m = m + 1
  m = "00" + m
  m = m.substr(m.length - 2);
  var day = d.getDate();
  day - 1;
  day = "00" + day;
  day = day.substr(day.length - 2);
  var dateString = y + m + day;
  DriveApp.createFile("Weatherx_Yesterdayx_" + dateString + ".txt", newFileData);
}