Hi, J F,
You are running WU-forecast.php Version 2.04 -- that issue was fixed in V2.05, so please update the script
You can run check-fetch-times.php?show=versions on your site to show scripts that have updates and get directions on
how to easily get the updates using my updates tool.
Best regards,
Ken
P.S. we have recently found that sites hosted on altervista.org will not be able to fix the problem (this doesn't apply to you, J F). See:
http://www.wxforum.net/index.php?topic=22905.msg220929#msg220929 for more info. The root cause was that altervista.org has a security policy that forces all scripts to use HTTP/1.0 (even if HTTP/1.1 protocol is requested), and WeatherUnderground servers respond to HTTP/1.0 requests with a page omitting the JSON data and also lacking the day-names in the raw HTML. Sites based on altervista.org hosting must remain on V2.04 to have any WU forecast visible, but that forecast will lack the day-names. V2.05 will not work on altervista.org sites and the problem is not fixable (except by moving the site to hosting other than by altervista.org). Unfortunately, altervista.org hosting (free) is quite popular for Europeans, especially Italian websites so I expect that many personal weather websites may have to find new (paid) hosting to fix the issue longer term.