The summary climate graph for Houston, TX shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.
The warmest month in Ellington Field, Houston, Texas is August with an average high temperature of 92.2°F. The hottest day on record was June 26 2012 when the temperature hit 105.8°F. During January the overnight temperature drops to an average of 45.9°F with the lowest temperature of 12.2°F being recorded on December 23 1989.
The warmest days on record are:
| 26 Jun 2012 | 105.8°F |
| 26 Jul 1954 | 104.4°F |
| 6 Jul 2005 | 104°F |
| 27 Aug 2011 | 104°F |
| 2 Jul 2012 | 104°F |
The warmest months on average were:
| August 2011 | 98.6°F |
| August 1999 | 96.1°F |
| July 1957 | 95.8°F |
| July 1998 | 95.7°F |
| July 1956 | 95.6°F |
The coldest days on record are:
| 23 Dec 1989 | 12.2°F |
| 2 Feb 1951 | 15.4°F |
| 11 Jan 1982 | 16.2°F |
| 10 Jan 1962 | 16.3°F |
| 24 Jan 1963 | 16.3°F |
The coldest months on average were:
| January 1977 | 37.6°F |
| January 1962 | 38°F |
| December 1989 | 38.2°F |
| February 1978 | 38.8°F |
| January 1963 | 39.3°F |
The wettest month by average rainfall in Houston, TX is June with an average of 2.1 inches of rain falling on 8 to 9 days.Although in January it typically rains on more days with 2.1 inches falling in 11 to 12 days. The driest month by average rainfall in Houston, TX is February with an average of 0.9 inches of rain falling on 10 to 11 days. Although in October it typically rains on less days with 1.5 inches falling in 7 to 8 days
The wettest days on record are:
| 4 May 1981 | 4.1 inches |
| 27 May 1992 | 3.5 inches |
| 20 May 1984 | 3 inches |
| 1 May 1975 | 2.8 inches |
| 11 May 1986 | 2.6 inches |
The wettest months on record are:
| January 1995 | 39 inches |
| July 1979 | 18.1 inches |
| October 1994 | 15.9 inches |
| June 1989 | 14 inches |
| June 1981 | 12.2 inches |
The driest months on record are:
| December 2012 | 0 inches |
| August 1941 | 0 inches |
| September 1941 | 0 inches |
| October 1941 | 0 inches |
| November 1941 | 0 inches |