YOU SAID:

THE weather has been throwing a bit of tiff lately

INTO JAPANESE

天気は最近少し固くなってきました

BACK INTO ENGLISH

The weather has been getting a bit hard lately

INTO JAPANESE

最近天気は少し厳しくなりました

BACK INTO ENGLISH

The weather has become a bit harsh recently

INTO JAPANESE

最近は天気が少し厳しくなりました

BACK INTO ENGLISH

Recently the weather has become a bit harsh

INTO JAPANESE

最近、天気は少し厳しくなりました

BACK INTO ENGLISH

Recently, the weather has become a bit harsh

INTO JAPANESE

最近、天気は少し厳しいものになりました