A weather report was a forecast of the weather. One who gave these reports was called a weatherman. (Star Trek Into Darkness)
A weather report, heard on the radio in the High Sierras in 1967, noted that the temperature in downtown Barstow was 75 degrees. (VOY: "Future's End")
In 2022, the Greater Toronto Newscast featured ongoing coverage of current and forecast weather in the city and surrounding regions. (Tomorrow and Tomorrow and Tomorrow)
In 2151, while dealing with an away team stranded on the planet that later became known as Archer IV, Jonathan Archer requested a weather report. (ENT: "Strange New World")
In an alternate reality, one of the news feeds on Admiral Alexander Marcus' wall display showed a 2 News Earth Sector 2 weather report. (Star Trek Into Darkness production art)
In 2374, B'Elanna Torres complained that Vorik delivered a particularly dire engineering assessment as if it was a weather report. (VOY: "Demon")
That same year, but in a holographic simulation of World War II set in 1944, a British radio broadcast that masqueraded as a weather report actually provided important information to the French Resistance. (VOY: "The Killing Game")