Climate in McAllen

McAllen, United States has a humid subtropical climate. The annual average temperature is about 23.4°C and the city receives roughly 1199 mm of precipitation across 135 rainy days a year, with around 1318 hours of sunshine. The warmest month is Jul (highs near 32.8°C) and the coldest is Jan (lows near 13.9°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

McAllen is classified as Humid Subtropical. This reflects its annual temperature range and the seasonal pattern of its rainfall.

McAllen receives about 1199 mm of precipitation a year over roughly 135 rainy days. The wettest month is Jul and the driest is Jan.

McAllen sees an estimated 1318 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in McAllen are Jan, Feb, Dec. Conditions vary year to year — verify with a current forecast before booking.

McAllen has a climate comfort score of 69/100, a comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

• Climate in San Antonio — Humid Subtropical, comfort 74/100
• Climate in Houston — Humid Subtropical, comfort 74/100
• Climate in El Paso — Desert, comfort 57/100