Temperature for October
In Harlingen, TX during October the average high temperature is 86.1°F. The hottest day on record was October 18, 2012 when the temperature hit 100.9°F.
Precipitation for October
In October the average monthly rainfall in Harlingen, TX is 0.74 inches with rain usually falling on between 5 and 6 days. 1943 was the driest October with only 0.00 inches of rain falling, and 1997 was the wettest October with 10.28 inches of rain. The wettest single day in October was 14 October 1997 when 3.49 inches of rain fell.
Tornados are reported on 0 and 1 days in October. There are thunderstorms on between 1 and 2 days in October.