There are loads of free weather apps for BlackBerry with the latest I have used called ShowMe! Weather from WiMEME Inc. There is nothing drastically new in this app that is not in others but I found it to work reliably with relatively nonintrusive ads. The app has an icon with the current temperature and gets its information from Google with a 4 day forecast. It includes weather conditions along with temperature and humidity.
Other features include:
- Desktop Weather Icon with current temperature
- Track the weather in multiple global cities/locations
- User defined temperature scale (Celsius or Fahrenheit)
- User defined weather locations
- User defined update timing (30, 60, 180 min, etc.)
You can pick up the free ShowMe! Weather app in the store at this link. Thanks Dustin for the tip!