Prognostication for the Year 1491

...the Pleiades portends humid weather; in some places, it will not be intensely cold, and it will likely be delayed. On the sixth day of the week after Gertrude, the day is mutable and apt for change. And on the following day, at least wind. On the third day of the week before the Annunciation of Mary, humidity will arrive in certain places. On Palm Sunday, humid weather at least, truly humidity; and a change will occur on these days. On Good Friday, humid weather and somewhat cold; in some places it will be delayed with the blowing of winds. On Easter day and the following day, disposed toward some mutation, in certain places not intense cold will be felt.

May
May, from its conjunction, will pertain to humidity and be temperate. And because Mercury, to which the moon is joined through conjunction by the sun, is moved, winds will move therein. Its opposition, however, in every respect will be temperate. This is argued from Jupiter, who is its lord.
On the Saturday after Easter, cold wind; the place of the moon also testifies to humidity, and in some places it will be delayed. On the third day of the week before Tiburtius, at least wind, though verging toward humidity in certain places, will arrive. On the day of Tiburtius, the place of the moon toward night portends humidity. On the Saturday after Tiburtius, wind and rain will also follow; and around these days, in warm places, the sound of clouds thunder will be heard. On the third day of the week before George, humidity, but in some places it is delayed with coldness. On the fifth day of the week before George and on the day itself, the days are disposed toward humidity and cold in certain places; the event will unfold on the first Sunday. On the second day of the week after George, at least humid wind, in warm places mixed with rain. On the day of Vitalis, the day is apt for mutation and toward humidity. On the Saturday before Philip and James, humidity, and on the day itself or near to it, at least wind. On the Saturday before Stanislaus, and in some places the following day, disposed toward rain.

June
Its conjunction, which will be eclipsed, will decline toward good quality of air; specific testimonies, however, will dispose certain days toward humidity and the sound of clouds. Its opposition, however, will imitate the nature of the conjunction in its qualities, and winds will move therein and many.
On the Sunday after Stanislaus and the following day, apt for mutation toward humidity. On the fifth day of the week after Sophia, humidity; in some places, cold wind. On the Saturday after Sophia, disposed toward rain. On the third day of the week after Sophia, the day is apt for rain, arriving in certain places with wind or other tempest. On the sixth day of the week before Urban, disposed toward humidity; and it will likely be delayed. On the third day of the week before Urban or near to it, at least wind with thunder.