This display does go through a 14-33 day learning mode. If the learning mode is complete, and you are still getting an inaccurate forecast we recommend resetting the display when your local pressure is at 29.92. You will remove the batteries, and unplug the adapter for about 5 minutes. After 5 minutes, you can power the station back up, and it should initiate the learning mode. Let it go through the 14 day learning mode, and once that is complete you should see an accurate 12-24 hour forecast. Thank you. Have a good day!