The weather according to Miss Thompson (4)

I believe the answer is:

rain

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'the weather' is the definition.
(rain is a kind of weather)

I don't understand how the rest of the clue works.

(Other definitions for rain that I've seen before include "Falling moisture" , "Weather - shower" , "The right" , "Precipitation" , "Pelt" .)

I've seen this clue in the Evening Standard.

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