Multiple Location Weather widget.

I’m looking for a widget that shows weather conditions and a 3-5 day forecast. I’ve found that, but now I need one that I can select 3 different locations on a drop down and it changes the conditions to the location I selected.

Please note that the drop down is visible to all visitors of my blog. They can Select, for example, Miami Florida’s Weather, Then Select Montego Bay Jamaica’s weather, and then Ontario Canada’s Weather.

Anyone know of a current widget that has this capability?

If not….. anyone know how I can code in a drop bar to an existing Weather Widget that changes the location on the fly? Without loging into wordpress?