Minimus araneus compluvium ascendit

Minimus araneus compluvium ascendit.
Deorsum pluvia araneum eluit.
Tum sol lucet, et pluviam siccat, ut
Minimus araneus rursum ascendat.

Info:
People who are purists about Latin word-stress may need to alter the melody in the "Itsy Bitsy Spider" slightly to make the word-stresses fit.