Jordan is a relatively small country with a total land area of 96000 sq km. Although mostly desert, within its compact area, there are 3 distinct climatic zones; the Jordan valley, Mountain Heights Plateau and the Desert or Badia region, which constitutes 75% of the total land area of Jordan. Jordan's weather truly consists of 4 seasons: Autumn, winter, spring, and summer. Most of Jordan's tourist attractions lie in the mountain heights Plateau, a strip which runs along the western edge of the country, and the Jordan Valley, which lies next to the Dead Sea; the lowest point on the surface of earth. Jordan is a very sunny country, with over 310 days of sunshine a year. The weather is almost exclusively dry and sunny from May to October, where there is barely any rainfall. Summers are hot but relatively pleasant due to the low humidity in the mountain heights with daytime temperatures frequently exceeding 36C and averaging about 32C, while nights are almost exclusively cool and pleasant. In the Jordan valley, summers can be very hot with temperatures reaching into the low forties on occasions, while Aqaba's weather in the south is similar to the Jordan valleys but with less rainfall.

Most of Jordan's desert receives less than 120 mm of rain a year, while the average rainfall in the mountain heights ranges between 300 and 600 mm a year. The rainy season begins at the end of November and continues till the end of March. Nonetheless, rainfall is sporadic even then. Chance of rain drops substantially from April onwards. The coldest months of the year are December and January, where temperatures average about 13 degrees Celsius but can drop to around 5 degrees. In areas with an altitude of 1000 meters and above, there is a chance of snowfall in winter, and some lucky few have even had the chance to see Petra (1200 meters above sea level) in the snow.

In brief:
Hot and dry summers with cool evenings.  The Jordan Valley below sea level is warm during winter and very hot in summer, Aqaba has a drier climate than the Dead Sea (with temperatures on average 10 degrees Celsius above those of Amman). Rain falls between November and April (mostly in the central and northern mountain ranges), while colder weather conditions occur in December / January.
Local daytime temperatures range as follows for the year (C):
January (4-13C) - February (4-13C) - March (6-17C) - April (10-23C) - May (15-28C) - June (17-31C) - July (20-32C) - August (19-32C) - September (18-30C) - October (14-26C) - November (9-20C) - December ( 5-14C)