This diplomatic edition of Leonard Digges's 1555 of *A PROGNOSTICATION OF RIGHT GOOD effect fruitfully augmented, containing plain, brief, pleasant, chosen rules, to judge the weather forever, by the Sun, Moon, Stars, Comets, Rainbow, Thunder, Clouds, with other Extraordinary tokens, not omitting the Aspects of Planets, with a brief judgement forever, of Plenty, Lack, Sickness, Death, Wars, etc. Opening also many natural causes, worthy to be known* is intended to make the treatise available in an edited form which preserves the original page layout and wording, while modernizing spelling and providing a complete scholarly apparatus based on the latest scholarship. This apparatus includes historical notes, translations of all Latin text, a glossary of terms unfamiliar to modern audiences, and a catalogue of any conjectural emendations.