AMMAN — Relatively cold and wet weather is expected to prevail during the coming week as unstable conditions affect the country, according to the Jordan Meteorological Department (JMD).

Unstable weather, caused by a cold upper trough, started affecting the country on Thursday, meteorologist Saed Taha said, noting that its impact will continue until the middle of next week.

"A drop in temperatures is expected on Friday, and it will be relatively cold and cloudy with chances of scattered showers and thunder. Winds will be northwesterly moderate to brisk," Taha told The Jordan Times.

The JMD issued a warning to the public about the possibility of reduced road visibility due to sand-laden winds in the eastern and western regions of the country.

"Temperatures on Friday will be four degrees below their annual average of 20ºC during this time of the year. Daytime temperatures in Amman will reach a high of 16ºC and drop to a low of 8ºC at night," the weather forecaster said.

On Saturday, the impact of the unstable weather will ease off, but it will remain relatively cold, with temperatures in the capital ranging between a maximum of 16ºC and a minimum of 7ºC, according to the JMD.

A further drop in temperatures is expected on Sunday, when the unstable weather conditions resurface, Taha said, noting that it will be cold and cloudy, with thunder at times.

"Temperatures in the capital will reach 15ºC during the day and plunge to 6ºC at night, while winds will be southwesterly moderate to brisk," Taha said.

The impact of the unstable weather is expected to continue on Monday, he added, noting that maximum temperatures during the coming week will range around 16ºC.

During autumn, temperatures start dropping gradually and the Kingdom witnesses several Red Sea troughs that cause unstable weather conditions and light rainfall, which constitutes less than 1 per cent of the country’s long-term annual average of eight billion cubic metres, according to the JMD.