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.
Over the course of the year, the temperature in Phoenix typically varies from 45Â°F to 107Â°F and is rarely below 38Â°F or above 112Â°F. The hot season lasts for 114 days, from May 29 to September 20, with an average daily high temperature above 98Â°F. The hottest day of the year is July 5, with an average high of 107Â°F and low of 84Â°F.