'forecast' originates from Old English, specifically the word 'forecæst,' where 'fore-' meant 'before' and 'cæst' meant 'to cast or throw.'

'forecæst' transformed into the Middle English word 'forecasten,' and eventually became the modern English word 'forecast.'

Initially, it meant 'to cast or throw forward,' but over time it evolved into its current meaning of 'predicting future events.'