Is Houston hot in May?
Days are typically hot at 30.3°C, while nights average 20.8°C.
United States · 1991–2020 normal
Typical May weather in Houston: 30.3°C by day, 20.8°C at night, 99 mm of rain over 4.2 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, May scores 59 out of 100 (March leads the year at 86). Daylight is calculated as 13 h 38 from latitude 29.76°.
May at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically hot at 30.3°C, while nights average 20.8°C.
The measured monthly average is 99 mm across about 4 wet days.
There are about 13 h 38 between sunrise and sunset at mid-month, calculated from the place latitude.
May ranks 7 of 12 in our weather comparison; March ranks first.
The evidence behind this page
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The weather comparison for Houston 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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