The agency, in its weather outlook released on Sunday, also advised members of the public to take precautions against hazards associated with thunderstorms, including strong winds, falling branches and flying objects.
The agency, in its weather outlook released on Sunday, said the three days would be characterised by cloudy skies, thunderstorms and varying degrees of rainfall across the northern, North-Central and southern parts of the country.
The long-awaited fight is scheduled for December 11 at Cardiff's Principality Stadium, but the rivalry officially began to heat up before either man has stepped inside the ring.