The Jordan Valley has little rainfall, intense summer heat, and mild, pleasant winters. The hill country of the East Bank has a modified Mediterranean climate, with less rainfall and hot, dry summers. The desert regions are subject to great extremes of temperature and receive rainfall of less than 20 cm (8 in) annually, while the rest of the country has an average rainfall of up to 58 cm (23 in) a year. Temperatures at 'Ammān range from about 4°c (39°f) in winter to more than 32°c (90°f) in summer.