To delete a forecast:

1. Go to the Forecast(s) box on the top left of the Forecasts screen

2. Click the Edit button to the right of the forecast you want to edit 
   
   

3. Click the Delete button on the bottom left of the Details box

4. You'll be returned to the Forecasts screen. Equinox will display a 'Deleted Forecast' message in the bottom right corner of the screen.