Rain gauge of a storage bin, which is weighed to record the mass. Certain models measure the mass using a pen on a rotating drum, or by using a vibrating wire attached to a data logger. The advantages of this type of gauge over tipping buckets are that it does not underestimate intense rain, and it can measure other forms of precipitation, including rain, hail and snow. These gauges are, however, more expensive and require more maintenance than tipping bucket gauges. The weighing-type recording gauge may also contain a device to measure the quantity of chemicals contained in the location's atmosphere. This
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,