I have a limited data volume account and need to ensure I underrstand the volume of traffic associated with this product.

Can you confirm the volume of data that is sent and received when a weather forecast update is requested?

Thanks in advance.

The data usage really depends on how often you're downloading the weather data and how much weather data you're downloading (which can be customized in the options). The "Data" tab in the Weather Watcher Mobile Options window shows you how much data is downloaded.