In June, Harlingen typically sees daytime highs of 33.3°C and overnight lows around 23.6°C. Compared to the annual average high of 28.5°C, June runs +4.8°C.
June in Harlingen averages a daytime high of 33.3°C and an overnight low of 23.6°C.
June runs +4.8°C compared to Harlingen's annual average high of 28.5°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 33.3°C and cooler evenings around 23.6°C.