Rain an occluded front, with thunderstorms possible, but usually their passage is associated with a drying of the air mass. Occluded fronts usually form around mature low-pressure areas. What separates rainfall from other precipitation types, such as ice pellets and snow, is the presence of a thick layer of air aloft which is above the melting point of water, which melts the frozen precipitation well before it reaches the ground. If there is a shallow near surface layer that is below freezing, freezing rain (rain which freezes on contact with surfaces in subfreezing environments) will result. Hail becomes an increasingly infrequent
Alexandria rainy winters and moderately hot summers that, at times, can be very humid; January and February are the coolest months, with daily maximum temperatures typically ranging from and minimum temperatures that could reach . Alexandria experiences violent storms, rain and sometimes snow, sleet and hail during the cooler months; these events, combined with a poor drainage system, have been responsible for occasional flooding in the city. July and August are the hottest and driest months of the year, with an average daily maximum temperature of . The average annual rainfall is around but has been as high as Port Said,