A forecast is a prediction of something to come or in the future. A forecast would take place before any type of action or activity happens. Forecasts are almost always wrong but they can be used to define a hope-for, goal, target or condition that you believe is attainable based on analysis and assessment.
Examples of Forecast
1. Educated Guessing
For further learning on forecasting techniques the book entitled Forecasting Methods and Applications gives good insight.