Weather in Houston in May
May in Houston is mild with average temperatures around 25.0°C (77.0°F). Expect significant rainfall with 119mm across approximately 11 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
30.6°C
87.1°F
Low
19.4°C
66.9°F
Precipitation
119 mm
4.7 inches
~11 rainy days
Conditions
Humidity
74%
Comparison to Adjacent Months
May is 4.3°C warmer than April, 32mm wetter than April.
May is 3.4°C cooler than June.