This a fork from the weather thread in the Agora
LSJ gives several references for the intransitive use of βρέχω. The most easily accessible (ie online) is the Epistle of James 5.17-18
Ἠλείας ἄνθρωπος ἦν ὁμοιοπαθὴς ἡμῖν, καὶ προσευχῇ προσηύξατο τοῦ μὴ βρέξαι, καὶ οὐκ ἔβρεξεν ἐπὶ τῆς γῆς ἐνιαυτοὺς τρεῖς καὶ μῆνας ἕξ: καὶ πάλιν προσηύξατο, καὶ ὁ οὐρανὸς ὑετὸν ἔδωκεν καὶ ἡ γῆ ἐβλάστησεν τὸν καρπὸν αὐτῆς.
Elijah was a man ...