Houston Weather in March
Houston, Texas enjoys warm weather throughout March, along with relatively low humidity and light rainfall.
This page gives detailed information on the typical March temperature, precipitation, sun, humidity, wind and storms for Houston. The numbers here are historical averages based on temperature and rainfall measurements gathered at Houston Hobby Airport and other climate data from George Bush Intercontinental Airport.
Temperature
| 73 °F | March average high | 23 °C |
| 56 °F | March average low | 13 °C |
| 23 days | 70 °F max. or more (21 °C) |
| 11 days | 50 °F min. or less (10 °C) |
The temperature rises nearly every day in March to over 60 degrees Fahrenheit (16 degrees Celsius) in Houston. The city averages 7 days this month when the thermometer reaches into the 80s °F (over 26 °C). Temperatures above 90 °F (32 °C) are not expected here during March.
The thermometer dips to 40 °F (4 °C) or below on an average of 2 nights. March does not get cold enough every year for frost.
Rain
| 3.3 in | total precipitation | 83 mm |
| 8 days | of rain |
Half the time, Houston receives 1.6 to 4.8 inches (39 to 121 mm) of rainfall in March. One in four years has drier weather, while another one in four is wetter.
Sun
| 54 % | sunshine |
| 7 days | clear skies |
The sun's rays reach the ground in Houston during 54 percent of daylight hours on average in March, for a total of 201 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in March at Houston lasts for 12 hours a day on average. The shortest day of the month is the 1st with 11 hours and 34 minutes of daylight. By the end of the month, the days have lengthened to 12:28 from sunrise to sunset. These durations can vary by a minute or two from year to year.
Humidity
| 73 % | March average humidity |
The relative humidity in Houston during March usually peaks at 87 percent in the morning then drops to 54 percent by mid afternoon.
| Local Time | 12 am | 3 am | 6 am | 9 am | 12 pm | 3 pm | 6 pm | 9 pm |
| Humidity % | 83 | 86 | 87 | 76 | 59 | 54 | 60 | 77 |
Wind
| 9.0 mph | March wind speed average | 14.5 kph |
March is windier than most other months in Houston.
Storms
| 2 days | rainfall of 0.5 inches (13 mm) or more |
| 4 days | with thunderstorms in March |
Reference
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.