Is Mesa hot in September?
Days are typically very hot at 37.9°C, while nights average 21.7°C.
United States · 1991–2020 normal
Typical September weather in Mesa: 37.9°C by day, 21.7°C at night, 18 mm of rain over 2.1 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, September scores 42 out of 100 (November leads the year at 82). Daylight is calculated as 12 h 20 from latitude 33.42°.
September at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically very hot at 37.9°C, while nights average 21.7°C.
The measured monthly average is 18 mm across about 2 wet days.
There are about 12 h 20 between sunrise and sunset at mid-month, calculated from the place latitude.
September ranks 9 of 12 in our weather comparison; November ranks first.
The evidence behind this page
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The weather comparison for Mesa is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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