Temperature for May
In Brownsville, TX during May the average high temperature is 88.0°F. The hottest day on record was May 11, 1974 when the temperature hit 100.9°F.
Precipitation for May
In May the average monthly rainfall in Brownsville, TX is 1.62 inches with rain usually falling on between 5 and 6 days. 1948 was the driest May with only 0.00 inches of rain falling, and 1982 was the wettest May with 12.38 inches of rain. The wettest single day in May was 30 May 1981 when 3.31 inches of rain fell.
There are thunderstorms on between 2 and 3 days in May.