NASA. Knowing the difference between a hypothesis, a theory, and a law is essential for the understanding of science, but for laypeople, sometimes these definitions can be unclear as the same terms are used differently in a colloquial context.
Thus, the mean temperature average in march in Phoenix (Arizona) is 20Â°C. Note that seasonal normals in contrast with those observed in Phoenix (Arizona) in the month of march with a maximum record of 37Â°C in 2013 and a minimum record of 3Â°C in 2012.
In that respect, it comes second to Miami; Phoenix has an average daily temperature of 75 Â°F (24 Â°C), compared to Miami's 77 Â°F (25 Â°C). Unlike most desert locations which undergo drastic fluctuations between day and nighttime temperatures, Phoenix's diurnal temperature variation is limited by the urban heat island effect.