This is the software publisher's description.

Firefox extension that brings international weather from AccuWeather.com toyour web browser. You can use your US zip code or you can easily find your townor city by using the built in search tool. It is unobtrusive and lightweight,yet can be customized to display nearly as much data as the leading desktopweather programs! If you can't find what you are looking for, click the weathericons displayed to open the AccuWeather.com forecast for your location. Aslider, similar to when popup notification for when all downloads complete, popsup from the bottom right corner of your screen when the current conditions areupdated. You can even set what appears in it or disable it!

Forecastfox lets you customize everything, from the number of days to beforecasted, to the content of the tooltips. You can decide whether to see thelabels, and you can decide what toolbar to place Forecastfox in. The optionswindow is intuitive and makes it fast and easy to change any of the settingsyou'd like.

The profile system lets you easily change between multiple locations. Eachprofile saves all of its own settings, including the tooltips and labels, thenumber of days forecasted and the location of the forecast. There is even asetting that allows you to automatically rotate between the profiles at a giventime interval.