Astrology as we know it today was unknown in Ancient Egypt until the later part of the Late Dynastic Period, when it was introduced into Egypt by the Greeks or the Persians.

The Egyptians did practice some sort of astrology, but it had little to nothing in common with that of later eras. Some representations from tombs and temples show that the Ancient Egyptians too had divided the nightly sky into constellations, but they are totally different from the constellations we use today.
 

The ceiling in the tomb of Seti I shows the Egyptian constellations in the northern sky. The stars are represented as red dots.

Horoscopes in the modern sense of the word were not known prior to the Late Dynastic Period. Before their contact with the Persians and the Greeks, they did not have the zodiacal signs and the so-called division of a horoscope in houses that determine the Western astrology. These were invented by the people of Mesopotamia, adapted by the Greeks and passed on to other cultures. It is only after this introduction that the zodiacal signs are represented on the ceilings of some temples, as was the case in Dendara and in Esna.

The association of Ancient Egypt with modern astrology is thus mere make-belief.

The Egyptians used other means of fortune-telling and predicting the future, such as a mythological calendar, where some days of the year were judged favourable or not for some activities. They also tried to explain dreams and tried to predict the future from them.