Harlingen, TX Climate in December

Temperature for December

In Harlingen, TX during December the average high temperature is 72.5°F. The hottest day on record was December 7, 1996 when the temperature hit 91.4°F.

Harlingen, TX daily average and extreme temperature range for December

Low Temperature

During December the overnight temperature drops to an average of 54.1°F, with the lowest temperature of 17.2°F being recorded on December 23, 1989. On average there are 1 days in December when the temperature stays below freezing all day. Overnight temperatures drop below freezing between 1 and 6 times in December.

Precipitation for December

In December the average monthly rainfall in Harlingen, TX is 0.29 inches with rain usually falling on between 6 and 7 days. 1943 was the driest December with only 0.00 inches of rain falling, and 2009 was the wettest December with 4.33 inches of rain. The wettest single day in December was 24 December 2006 when 2.43 inches of rain fell.

In December it usually snows on between 0 and 1 days. In December there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in December.