Nouns

(n)prognosis, forecasta prediction about how something (as the weather) will develop

Verbs

(v)forecast, calculatepredict in advance
(v)bode, portend, auspicate, prognosticate, omen, presage, betoken, foreshadow, augur, foretell, prefigure, forecast, predictindicate, as with a sign or an omen“These signs bode bad news”