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forecast

American  
[fawr-kast, -kahst, fohr-] / ˈfɔrˌkæst, -ˌkɑst, ˈfoʊr- /

verb (used with object)

forecasts, present (3rd person singular) forecasted, past participle, past forecasting present participle
  1. to predict (a future condition or occurrence); calculate in advance.

    to forecast a heavy snowfall; to forecast lower interest rates.

    Synonyms:
    anticipate, foretell
  2. to serve as a prediction of; foreshadow.

  3. to contrive or plan beforehand; prearrange.

    Synonyms:
    project

verb (used without object)

forecasts, present (3rd person singular) forecasted, past participle, past forecasting present participle
  1. to conjecture beforehand; make a prediction.

    Synonyms:
    estimate, guess
  2. to plan or arrange beforehand.

noun

  1. a prediction, especially as to the weather.

  2. a conjecture as to something in the future.

    Synonyms:
    estimate, guess
  3. the act, practice, or faculty of forecasting.

  4. Archaic. foresight in planning.

    Synonyms:
    prescience, forethought
forecast British  
/ ˈfɔːˌkɑːst /

verb

  1. to predict or calculate (weather, events, etc), in advance

  2. (tr) to serve as an early indication of

  3. (tr) to plan in advance

"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

noun

  1. a statement of probable future weather conditions calculated from meteorological data

  2. a prophecy or prediction

  3. the practice or power of forecasting

"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

Synonym Usage

See predict.

Other Word Forms

Derived Forms

Etymology

Origin of forecast

First recorded in 1400–50; Middle English (verb) “to plan ahead of time”; see origin at fore-, cast ( def. )

Explanation

A forecast is a prediction of what will happen. If the weather forecast calls for sunny skies, consider leaving your umbrella at home. (But, since forecasts aren’t guaranteed to be right, don’t blame us if you get rained on.) While often used in the context of weather, forecast can also be used for other types of predictions such as those related to financial or political outcomes. Note that a forecast is typically a prediction made by experts. So, while a financial analyst might forecast fourth-quarter profits, your prediction about whether your friend will pay back the five dollars he owes you is more of a hunch than a forecast.

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Vocabulary lists containing forecast

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The World Cup is forecast to result in rare late night and early morning peaks in energy demand, according to the company that runs the UK's power network.

From BBC • Jun. 6, 2026

This might include not providing his own economic forecast, such as not contributing to the dot plot.

From MarketWatch • Jun. 6, 2026

Dry weather is forecast for Sunday, when England will surely complete a win to begin their post-Ashes rebuild on a positive note.

From BBC • Jun. 6, 2026

The consensus forecast calls for a 4.2% year-over-year rise.

From Barron's • Jun. 5, 2026

No one told Burnham about the fire, no one told him of the cancellations, and no one told him of Murphy’s forecast.

From "The Devil in the White City" by Erik Larson

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