Harlingen, TX Climate in May

Temperature for May

In Harlingen, TX during May the average high temperature is 89.2°F. The hottest day on record was May 11, 1974 when the temperature hit 105.1°F.

Harlingen, TX daily average and extreme temperature range for May

Low Temperature

During May the overnight temperature drops to an average of 72.3°F, with the lowest temperature of 51.1°F being recorded on May 4, 1954. In May it has never frozen overnight.

Precipitation for May

In May the average monthly rainfall in Harlingen, TX is 0.72 inches with rain usually falling on between 3 and 4 days. 1943 was the driest May with only 0.00 inches of rain falling, and 2007 was the wettest May with 11.06 inches of rain. The wettest single day in May was 26 May 2007 when 6.69 inches of rain fell.

There are thunderstorms on between 2 and 3 days in May.