The summary climate graph for Brownsville, 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 Brownsville South Padre Island International, Brownsville, Texas is August with an average high temperature of 93.5°F. The hottest day on record was March 27 1984 when the temperature hit 106.0°F. During January the overnight temperature drops to an average of 51.5°F with the lowest temperature of 16.0°F being recorded on December 24 1989.
The warmest days on record are:
| 27 Mar 1984 | 106°F |
| 6 Sep 2000 | 105.1°F |
| 31 Aug 2012 | 105.1°F |
| 20 Sep 1947 | 104.4°F |
| 30 Jul 2003 | 104°F |
The warmest months on average were:
| July 1980 | 97.9°F |
| August 2011 | 97.2°F |
| July 2009 | 97.2°F |
| August 2009 | 96.9°F |
| August 2005 | 96.9°F |
The coldest days on record are:
| 24 Dec 1989 | 16°F |
| 12 Jan 1962 | 19.9°F |
| 26 Dec 1983 | 19.9°F |
| 1 Feb 1951 | 21.9°F |
| 31 Jan 1949 | 23°F |
The coldest months on average were:
| December 1989 | 38.7°F |
| January 1985 | 42.6°F |
| January 1977 | 44°F |
| January 1978 | 44.6°F |
| December 1983 | 45°F |
The wettest month by average rainfall in Brownsville, TX is September with an average of 3.5 inches of rain falling on 9 to 10 days.Although in January it typically rains on more days with 0.9 inches falling in 9 to 10 days. The driest month by average rainfall in Brownsville, TX is December with an average of 0.7 inches of rain falling on 9 to 10 days. Although in July it typically rains on less days with 1.5 inches falling in 5 to 6 days
The wettest days on record are:
| 8 March 1973 | 10.6 inches |
| 13 March 2007 | 5.4 inches |
| 15 March 2000 | 2.6 inches |
| 28 March 1999 | 2.5 inches |
| 11 March 1997 | 2 inches |
The wettest months on record are:
| April 1973 | 23.3 inches |
| September 1984 | 19.2 inches |
| April 1978 | 18.8 inches |
| September 2003 | 15.1 inches |
| July 2008 | 13.3 inches |
The driest months on record are:
| February 1947 | 0 inches |
| March 1947 | 0 inches |
| April 1947 | 0 inches |
| May 1947 | 0 inches |
| June 1947 | 0 inches |