BBC Weather is the BBC's department in charge of preparing and broadcasting weather forecasts and is now part of BBC News. The broadcast meteorologists are employed by the Met Office. The longest-serving BBC weather forecaster is Michael Fish, who appeared for 36 years between 1974 and 2010 and still occasionally forecasts for South East Today.

The first BBC weather forecast was a shipping forecast broadcast on the radio on behalf of the Met Office on 14 November 1922, and the first daily weather forecast was broadcast on 26 March 1923.

In 1936, the BBC experimented with the world's first televised weather maps, which was brought into practice in 1949 after World War II. The map filled the entire screen, with an off-screen narrator commenting on the next day's weather.

On 11 January 1954, the first in-vision weather forecast was broadcast, presented by George Cowling. In an in-vision the narrator stands in front of the map. At that point, the maps were drawn by hand in the London Weather Centre, before being couriered across London. The forecasts were presented by the same person who had composed them, and had relatively low accuracy. The London Weather Centre which opened in 1959 took the responsibility for the national radio weather broadcasts. Radio forecasters were chosen by a BBC audition from the forecasters at the London Weather Centre.