Seasonal Forecasts

Seasonal forecasts of temperature and precipitation.

This maproom displays the IRI seasonal forecasts in both the traditional tercile format as well as a flexible format that enables any quantile of the forecast distribution to be selected. Please see the main IRI Seasonal Forecasts page for detailed information about the NMME-based forecast system. Additional tabs on this page display maps of observed climatological percentile values by season, as well as the forecasts and climatologies of individual NMME models. The Older Forecasts tab contains discontinued products.