http://forum.xda-developers.com/showthread.php?t=487090


Instructions :

Installation

1. Disable Titanium in Settings -> Today -> Items
2. Install Titanium Weather Cab (link below)
3. It will ask you to restart Device, click ok to soft reset device.
4.1. Scroll up to titanium weather v3.x.x in Today's Panel and on the panel to start Setup or
4.2. Select/Click Setup in right soft key.
5. Highlight 3) Configure Forecast Options/Setup, Click OK
6. Configure Zip or Location Code | Temperature Units
7. after you've configure the settings, Select Cancel in right soft key to display Main Menu
8. Highlight 2) Run Full Update and exit