What did MIT researchers find about subseasonal weather forecasts?

An MIT-led team reported that a machine learning post-processing method doubled the accuracy of ECMWF's model two to six weeks ahead and beat climatological averages.

Who led MIT's weather forecasting study?

MIT research scientist Judah Cohen, with lead authors Hannah Guan, Soukayna Mouatadid and Genevieve Flaspohler.

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Private research university

MIT

MIT, the Massachusetts Institute of Technology, is a private research university in Cambridge, Massachusetts, founded in 1861. Its AI research spans machine learning, robotics, biology and climate science. In October 2026 an MIT-led team reported in Nature a machine learning method that doubled the accuracy of two-to-six-week weather forecasts.

Last reviewed 28 Oct 2026

Facts at a glance

Type	Private research university
Founded	1861
Headquarters	Cambridge, Massachusetts
Weather forecasting research	Machine learning correction that doubled ECMWF accuracy two to six weeks ahead (Nature, October 2026) source
News site	MIT News, news.mit.edu

Questions people ask

What did MIT researchers find about subseasonal weather forecasts?: An MIT-led team reported that a machine learning post-processing method doubled the accuracy of ECMWF's model two to six weeks ahead and beat climatological averages.
Who led MIT's weather forecasting study?: MIT research scientist Judah Cohen, with lead authors Hannah Guan, Soukayna Mouatadid and Genevieve Flaspohler.