AccuWeather
Local weather hourly, daily and long-range forecasts. Also features warnings, maps, and historical data.
Cancellations.com
Features school cancellation reports.
Intellicast
Features forecasts, radar and weather maps.
National Weather Service
Features current conditions, advisories and 7-day forecast.
The Weather Channel
Features maps, warnings, historical data, plus short and long-range forecasts. Also includes special reports for golfing, gardening and other activities.
Weather Underground
Features radar maps, forecasts, and astronomy information.