For Windows Mobile
(Androkkid can be found here: http://www.simosoftprojects.com/androkkid.php)
Other Widgets: http://forum.xda-developers.com/showthread.php?t=569566 (GORAPSWeather, Bluetooth(fherfort))
and http://sites.google.com/site/wmdsoft/home (WMD-Profile, WMD-Agenda, WMD-Tasks)
This is still a work in progress, but I thought maybe other people can test and give some feedback. Also if someone wants to improve it, I enclose the source files. I use SharpDevelop for programming.
The widget uses Google weather API.
Sometimes the details screen flickers.
Sometimes you have to try several times, before an update is successful.
I don't know if all the languages show correctly (i.e. Chinese doesn't on my phone).
I cannot test when you chose to update via a data connection, since I don't have one myself. It will however, automatically update through wireless or activesync.
If you have more than one hgweather widget, the last one will show through on the details screen. I don't know whether this is because of features in Androkkid itself.
Just unzip to the widget directory.