Weather To Go is a Today page plug-in that displays the 4 day forecast, and the current weather (in case you are in a windowless bunker?!). Based on the Weatheroom service, the data only includes the United States (using the Zip Code).
The forecasts of only a single town can be displayed at a time. However, the data of a second town can be loaded at synchronisation and displayed in place of the first town. A click on the icon of the same day gives more precise information via a pop-up: wind force and direction, atmospheric pressure, sunrise and sunset, phase of the moon.