Keep an eye on the weather.

MetCheck
www.metcheck.com

Weather from the Meteorological Office
www.metoffice.gov.uk

Weather Bonk – a mashup that lets you view real time weather information on a map. Drivers can get a personalized route forecast for your trip
www.weatherbonk.com

The Weather Channel – a local weather forecast for any location in the world
www.weather.com

Weather2Travel.com – a travel guide to the world’s holiday weather
www.weather2travel.com

Weather Underground – provides weather information for worldwide locations, including current conditions, hourly forecasts, radar and satellite maps.
www.wunderground.com