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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.

A spark came Wednesday from Broadcom, which told investors it expects to triple revenue to $16 billion in this quarter from a year earlier, but left its forecast for 2027 in place.

From The Wall Street Journal • Jun. 7, 2026

But if the strait stays closed, it says each additional month would add roughly $5 a barrel to its third-quarter forecast for oil prices and $15 to its fourth-quarter estimate as inventories decline.

From Barron's • Jun. 7, 2026

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

Importantly, hourly earnings came in exactly on forecast — no acceleration at all.

From MarketWatch • Jun. 6, 2026

Therefore the government volcanologists called in to monitor and forecast St. Helens’s behavior primarily had seen only Hawaiian volcanoes in action, and they, it turned out, were not the same thing at all.

From "A Short History of Nearly Everything" by Bill Bryson

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