RIYADH — Temperatures will start witnessing a significant decrease in a number of Saudi regions from Thursday, according to a report of the National Centre of Meteorology (NCM). Temperatures are expected to fall, reaching between five and zero degrees Celsius in the regions of Tabuk, Al-Jouf, Hail and the Northern Borders region, the Saudi Press Agency reported quoting an NCM statement. The report also indicated that temperatures will reach between five and nine degrees Celsius in the regions of Riyadh, Al-Qassim and the northern part of the Eastern Province. Moderate to heavy rain, accompanied by thunderstorms and hail, will be experienced in many regions of the Kingdom, especially in the Makkah, Madinah and Al-Baha regions. Temperatures also dropped along with torrential rain and hail in some regions of the Kingdom.