2025 2025 Winter Forecastle. (iowastormcenter.com) — iowa storm center has issued the final forecast for the months spanning from november 2024 to may 2025 for the temperature and precipitation. During the autumn months, projections spoke of a winter dominated by persistent high pressure and mild temperatures, with no major surprises on the horizon.

Looking at the forecast for the winter, we anticipate a la niña through the winter—and sure enough, a weak la niña is already starting to develop. January is forecast to start with a pressure pattern change.