Well, normally, you would have to pay for it or create it yourself.  That's where learning about XSL transformations come in real handy.  But since I'm experiencing a grand day here in the midwest, I'll share a sample of an xsl customized for Yahoo Weather.  If it doesn't work quite right for you, search google for some xsl tutor sites.  I'm going outside...

Cheers

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0"
 xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#">
<xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
<!-- RSSv2.0 Yahoo Weather Example by Phil 'iwonder' Guerra -->
<xsl:template match="/">
 <div>
  <xsl:apply-templates select="rss/channel"/>
  </div>
</xsl:template>
<xsl:template match="rss/channel">
<xsl:variable name="link" select="link"/>
  <xsl:variable name="description" select="description"/>
  <xsl:variable name="image" select="image/url"/>
  <xsl:variable name="idesc" select="image/description"/>
  <xsl:variable name="ilink" select="image/link"/>
  <xsl:variable name="iwide" select="image/width"/>
  <xsl:variable name="ihigh" select="image/height"/>
  <xsl:variable name="Sunrise" select="/yweather:astronomy/@sunrise"/>
<div class="head">
 <xsl:if test="$image">
    <a href="{$ilink}" ><xsl:value-of select="ilink" /></a>
    <img src="{$image}" height="{$ihigh}" width="{$iwide}" style="float: left; margin: 2px; border: 0px;"/>
 </xsl:if>
 <font size="-2">
     <a href="{$link}"><xsl:value-of select="substring-after(description,'Yahoo! ')" /></a><br/>
<hr/>
 Sunrise: <xsl:value-of select="yweather:astronomy/@sunrise"/><br/>
  Sunset: <xsl:value-of select="yweather:astronomy/@sunset"/><br/> </font>
 <hr/>
</div>
  <xsl:apply-templates select="item"/>
</xsl:template>
<xsl:template match="item">
  <xsl:variable name="item_link" select="link"/>
  <xsl:variable name="item_title" select="description"/>
  <div class="subHead">
    <a href="{$item_link}"><xsl:value-of select="title" disable-output-escaping="yes"/></a></div>
 <font size="-2">
 <xsl:value-of select="description" disable-output-escaping="yes"/></font><br/>
 <font size="-3">
  Lat: <xsl:value-of select="geo:lat"/><br/>
  Lon: <xsl:value-of select="geo:long"/><br/>
 (<xsl:value-of select="pubDate"/>)</font><br/> <hr/>
 </xsl:template>
</xsl:stylesheet>