First review for me is a weather app called Foreca Weather. Not new or newly released but one of the first applications that I load onto my S60v3 devices.
After opening ForecaWeather it will fetch a newly updated forecast;
The only way to stop it from automatically updating is by hitting Cancel or if it is within the un-expired time to refresh from Settings. Once it has the updated information you are presented with a screen showing you the current conditions;
By moving left or right on the d-pad you can move to a Short Forecast;
and a Long Forecast with less detailed information;
The main feature that I use ForecaWeather for is the ability to insert a memo into the calender that will show up on the Active Standby screen!
It also has the ability to display animated weather radar, cloud movement, heat spots and other fun to watch pictures however they will increase the amount of information downloaded each time.. With just weather for a single location, the amount of data transferred is claimed to be 1kb as seen in the first picture. This is very conservative for those not on an unlimited data plan and it also stores a full 2 week forecast.
The newest release is GPS aware and will download forecasts based on your location. ForecaWeather costs a one time $19.95 fee for a single license. No monthly charges whatsoever.