The paper presents the ability of the WOFOST model to estimate and forecast yields of winter wheat on field scales. This model is chosen because it is the most widely tested in Europe. The WOFOST is run using daily weather data for potential and water-limited productions. Yields predicted by the model were compared with experimental yields. Results indicated that the relative root mean square errors of yield forecasts and predictions ranged from 9% to 24%. The predicted mean water-limited yields and above-ground dry matter accounted for 46 to 54 % variability of mean regional yields in Poland. The predicted mean potential yields and water-limited yields for two soils with different available water content (140 mm and 210 mm) were presented.