Arguably one of the best premium weather applications for the BlackBerry, BerryWeather, is 50% off the regular price of $9.95 and, for today only (11/27/09), you can get it for $4.97.
BerryWeather has a ton of features including instant access to current conditions plus detailed 7-day and 24-hour forecasts for over 72,000 locations worldwide.
Download BerryWeather for $4.97 in the RIMarkable BlackBerry AppStore <<<