Save the code below to a file (WeatherCurrent.php) and then create a shell command Geeklet with the command:
php /pathtofile/WeatherCurrent.php
Change the path variables to where you have your weather icons stored.
Create an Image Geeklet with URL:
file://localhost/pathtofiles/Geeklets/Weather/CurrentCondition.png
PHP Code
<?php
$Location = 'Universal City, CA';
$pathtoimages = '/pathtofiles/Geeklets/Weather/ConditionIcons/';
$pathtocurrentimage = '/pathtofiles/Geeklets/Weather/CurrentCondition.png';`
$BASE_URL = "http://query.yahooapis.com/v1/public/yql";
$yql_query = 'select * from weather.forecast where woeid in (select woeid from geo.places(1) where text="'.$Location.'")';
$yql_query_url = $BASE_URL . "?q=" . urlencode($yql_query) . "&format=json";
// Make call with cURL
$session = curl_init($yql_query_url);
curl_setopt($session, CURLOPT_RETURNTRANSFER,true);
$json = curl_exec($session);
// Convert JSON to PHP object
$phpObj = json_decode($json,true);
//print_r($phpObj);
$temp = $phpObj['query']['results']['channel']['item']['condition']['temp'];
$condition = $phpObj['query']['results']['channel']['item']['condition']['text'];
$weathericon = $phpObj['query']['results']['channel']['item']['condition']['code'];
$units = $phpObj['query']['results']['channel']['units']['temperature'];
$weatherimage = $pathtoimages.$weathericon.'.png';
copy($weatherimage, $pathtocurrentimage);
echo $condition.' '.$temp.'°'.$units."\n";
?>