Hi Quim,
That link does seem to bring back more extensive details about the weather in the actual feed. Visually what you see is just an HTML representation of the weather, but if you look at the source of the feed you'll see all of the data. When doing this, I see the following data:
CODE
<title>Yahoo! Weather - Sunnyvale, CA</title>
<link>http://us.rd.yahoo.com/dailynews/rss/weather/Sunnyvale__CA/*http://weather.yahoo.com/forecast/USCA1116_c.html</link>
<description>Yahoo! Weather for Sunnyvale, CA</description>
<language>en-us</language>
<lastBuildDate>Tue, 08 Sep 2009 9:56 am PDT</lastBuildDate>
<ttl>60</ttl>
<yweather:location city="Sunnyvale" region="CA" country="US"/>
<yweather:units temperature="C" distance="km" pressure="mb" speed="kph"/>
<yweather:wind chill="18" direction="350" speed="4.83" />
<yweather:atmosphere humidity="61" visibility="16.09" pressure="1012.2" rising="0" />
<yweather:astronomy sunrise="6:44 am" sunset="7:26 pm"/>
<image>
<title>Yahoo! Weather</title>
<width>142</width>
<height>18</height>
<link>http://weather.yahoo.com</link>
<url>http://l.yimg.com/a/i/us/nws/th/main_142b.gif</url>
</image>
<item>
<title>Conditions for Sunnyvale, CA at 9:56 am PDT</title>
<geo:lat>37.39</geo:lat>
<geo:long>-122.03</geo:long>
<link>http://us.rd.yahoo.com/dailynews/rss/weather/Sunnyvale__CA/*http://weather.yahoo.com/forecast/USCA1116_c.html</link>
<pubDate>Tue, 08 Sep 2009 9:56 am PDT</pubDate>
<yweather:condition text="Fair" code="34" temp="18" date="Tue, 08 Sep 2009 9:56 am PDT" />
<description><![CDATA[
<img src="http://l.yimg.com/a/i/us/we/52/34.gif"/><br />
<b>Current Conditions:</b><br />
Fair, 18 C<BR />
<BR /><b>Forecast:</b><BR />
Tue - Mostly Sunny. High: 27 Low: 15<br />
Wed - Sunny. High: 27 Low: 17<br />
<br />
<a href="http://us.rd.yahoo.com/dailynews/rss/weather/Sunnyvale__CA/*http://weather.yahoo.com/forecast/USCA1116_c.html">Full Forecast at Yahoo! Weather</a><BR/><BR/>
(provided by <a href="http://www.weather.com" >The Weather Channel</a>)<br/>
]]></description>
<yweather:forecast day="Tue" date="8 Sep 2009" low="15" high="27" text="Mostly Sunny" code="34" />
<yweather:forecast day="Wed" date="9 Sep 2009" low="17" high="27" text="Sunny" code="32" />
<guid isPermaLink="false">USCA1116_2009_09_08_9_56_PDT</guid>
</item>
</channel>
</rss>
Jonathan LeBlanc
Technology Evangelist
Yahoo! Developer Network
Twitter:
jcleblanc
