Wiktionary
driving rain
n. Rain propelled by a driving wind.
Wikipedia
Driving Rain
Driving Rain is the twelfth studio album by Paul McCartney under his own name, recorded and released in 2001 as a double LP and as a single CD.
Usage examples of "driving rain".
Then the van is retreating into the teeming, driving rain and he sees David Carver lying dead in his driveway in a litter of glass from the blown-in picture window.