You can now check the Facebook app to see if you need to wear your rubbers
In addition to the current readings and the forecast, Facebook's weather page will show an image reflecting the current conditions by where you live. Unless you've some bad luck, you should find the Weather section on your Facebook app since it has rolled out to 95% of the app's global users. Facebook says that it will also allow users to set notifications for receiving weather forecasts. These notifications are currently undergoing testing and should be available by the end of the month.
Offering weather information inside the Facebook mobile app will keep users from leaving it for a dedicated weather app if they want to know whether to carry an umbrella with them. Facebook says that the real goal is to delight its users. Considering that delighted users stay in the app longer, we'd say that no matter how you slice it, Facebook is trying to get stickier with its mobile app.