Original Forecastfox Weather add-on for Mozilla Firefox is abandoned October 6, 2012:
Forecastfox Weather is a free extension for Mozilla Firefox and Google Chrome that adds weather icons to your browser's toolbar, letting you easily track the weather anywhere in the world. Mousing over the weather icons reveals detailed weather information for each forecasted day in an easily readable format. Forecastfox Weather aims to be unobtrusive and easy to use.
US and International Weather
Get current conditions, forecasts, radar/satellite and millions of locations in the US and around the world.
Severe Weather Alerts
Receive severe weather alerts for locations within the United States.
Save Locations and Preferences
Save your recent locations to easily track weather across multiple locations. Forecastfox is very customizable and can fit a variety of needs.
Click any icon to go to AccuWeather.com for detailed current conditions, hourly forecasts, the extended outlook and more.
Forecastfox is Free Software: please, if you like it, you can support its progress through PayPal.