Plain English Meaning

DZ on a weather report means it's drizzling — that fine, misty rain made up of tiny droplets that hang in the air rather than falling like normal rain.

Full Definition

In a METAR, DZ is the precipitation code for drizzle: very small, closely spaced water droplets falling from low stratus clouds or fog. Drops are smaller than rain (less than 0.5 mm in diameter) and appear to float and drift with the air rather than fall straight down.

Context Anchor

Seen in METAR weather reports when present weather is coded, such as -DZ for light drizzle or FZDZ for freezing drizzle.