Houston Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Houston, Texas during each month of the year.
The average high and low temperatures are listed below by month and annually for Houston, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 70, 80 or 90 °F each month in Houston, scroll down farther. There are also counts of nights with warm temperatures and days with cold weather.
All the numbers are averages, based on climate data gathered from 1981 to 2010.
|High °F||Low °F||High °C||Low °C|
Days of Hot Weather in Houston
Days of 90-plus degrees Fahrenheit are common throughout the summer in Houston, while the nights seldom get cooler than 70 degrees. On average, four days in July and August see the temperature top 99 degrees.
Daytime highs in the 80s can happen any month of the year in Houston, while most nights stay above 50 degrees.
How Often Houston Has Cold Temperatures
Houston gets an average of 10 nights a year when the temperature drops to freezing. This can happen anytime from December to March. It normally never gets below 21 °F, though.
Even after the coldest nights, Houston always warms to above freezing during the day.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.