it is mild, or it is hot (speaking of the weather)
IPAspelling:
tɬɑtotoːniɑ
Alonso de Molina:
tlatotonia. (pret. otlatotoniac. vel. otlatotonix.) hazer tiempo blando y templado, o hazer calor. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 142r. col. 1. Thanks to Joe Campbell for providing the transcription.