Weather was the environmental conditions caused by the atmosphere.
Various incarnations of the Doctor encountered devices which could affect the weather, like the Gravitron, (TV: The Moonbase) the Weather Control Unit, (TV: The Seeds of Death) the Stormcore (PROSE: Drift) and the sonic screwdriver. (COMIC: Death to the Doctor!)
When the Master opened the Eye of Harmony inside the Doctor's TARDIS on New Year's Eve 1999, it caused freak weather patterns all over Earth. (TV: Doctor Who)
The Saturnyns attempted to control the weather in 1580 Venice to turn the Earth into their new home. (TV: The Vampires of Venice)
River Song's vortex manipulator was modified with a weather app. (AUDIO: The Sonomancer)