August in Pharr averages a daily high of 37.3°C with nights around 25.5°C. Expect roughly 4.8 wet days totalling 46.6mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Pharr is November–March.
Based on MCALLEN MILLER INTERNATIONAL AIRPORT, TX US (6.3km), 1995–2024. 30 years of August data.