Houston Weather in April
April brings another month of warm weather to Houston, Texas. This month is also noticeably sunnier than previous ones, and windier.
This page gives detailed information on the typical April 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
| 79 °F | April average high | 26 °C |
| 62 °F | April average low | 17 °C |
| 16 days | 80 °F max. or more (27 °C) |
| 12 days | 60 °F min. or less (16 °C) |
The temperature rises nearly every day during April to over 70 degrees Fahrenheit (21 degrees Celsius) in Houston. Temperatures of 90 °F (32 °C) and above can happen, but are uncommon here this time of year.
The thermometer dips to 50 °F (10 °C) or below on an average of 3 nights. But most years April does not get as cold as 40 °F (4 °C).
Rain
| 4.1 in | total precipitation | 104 mm |
| 8 days | of rain |
Half the time, Houston receives 1.6 to 5.1 inches (41 to 129 mm) of rainfall in April. One in four years has drier weather, while another one in four is wetter.
Sun
| 58 % | sunshine |
| 7 days | clear skies |
The sun's rays reach the ground in Houston during 58 percent of daylight hours on average in April, for a total of 224 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in April at Houston lasts for 12 hours and 54 minutes a day on average. The shortest day of the month is the 1st with 12 hours and 30 minutes of daylight. By the end of the month, the days have lengthened to 13:18 from sunrise to sunset. These durations can vary by a minute or two from year to year.
Humidity
| 73 % | April average humidity |
The relative humidity in Houston during April usually peaks at 89 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 % | 85 | 88 | 89 | 73 | 58 | 54 | 60 | 79 |
Wind
| 9.1 mph | April wind speed average | 14.6 kph |
April is Houston's windiest month.
Storms
| 3 days | rainfall of 0.5 inches (13 mm) or more |
| 3 days | with thunderstorms in April |
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.