[fawr-kast, -kahst, fohr-]

verb (used with object), fore·cast or fore·cast·ed, fore·cast·ing.

verb (used without object), fore·cast or fore·cast·ed, fore·cast·ing.

to conjecture beforehand; make a prediction.
to plan or arrange beforehand.


Origin of forecast

1350–1400; Middle English (noun) plan. See fore-, cast
Related formsfore·cast·a·ble, adjectivefore·cast·er, nounre·fore·cast, verb (used with object), re·fore·cast or re·fore·cast·ed, re·fore·cast·ing.un·fore·cast, adjectiveun·fore·cast·ed, adjective

Synonyms for forecast

Synonym study

1. See predict. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for forecast

Contemporary Examples of forecast

Historical Examples of forecast

  • A physician's forecast of the disease by the patient's pulse and purse.

  • Was there anything in the forecast of the night that made him falter?

    Bride of the Mistletoe

    James Lane Allen

  • But I knew 'twas Beriah's forecast or he wouldn't have been so sure of it.

    Cape Cod Stories

    Joseph C. Lincoln

  • By her own desire she passed it quietly, and had leisure to review and to forecast.

    Love and Lucy

    Maurice Henry Hewlett

  • This forecast may seem to be of a highly conjectural nature.

British Dictionary definitions for forecast


verb -casts, -casting, -cast or -casted

to predict or calculate (weather, events, etc), in advance
(tr) to serve as an early indication of
(tr) to plan in advance


a statement of probable future weather conditions calculated from meteorological data
a prophecy or prediction
the practice or power of forecasting
Derived Formsforecaster, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for forecast

late 14c., "to scheme," from fore- "before" + casten "contrive." Meaning "predict events" first attested late 15c. Related: Forecasted; forecasting.


early 15c., probably from forecast (v.); earliest sense was "forethought, prudence;" meaning "conjectured estimate of a future course" is from 1670s. A Middle English word for weather forecasting was aeromancy.

Online Etymology Dictionary, © 2010 Douglas Harper