### Clue: Harsh line accepted by popular union (9)
### Answer: INCLEMENT 
 ### Explanation: Definition: Harsh
 L(abbrev. for "line") **contained in**(accepted by) [ IN(popular;in fashion) + CEMENT(union – I'm not sure of "cement" as a synonym for "union". The former is the substance that serves to bind or unite, or, as a verb, the act of doing so; whereas the latter is the result of binding together, and cannot be used as a verb.) ].
Defn: …, such as is the weather.