Open the app and scroll down on the home page to see the daily weather forecast
Make sure you confirmed your location when you registered on the app.
You can see the temperature, rain and wind speeds through the day. 
Use the forecast for the next few days to plan your work. If you see rain, you can decide when to spray pesticides, or plan your harvest.
And remember, the weather forecast is a good guide, but it is not always 100% accurate.
Get into the habit of checking the weather every morning to get the best results for your farm!