Current Weather and Forecast in McAllen, TX
Texas, United States 🇺🇸
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About the weather in McAllen
McAllen has a humid subtropical climate. August is the warmest month, with average highs of 98°, and January the coldest, when nights fall to around 53°. September brings the most rain, on about 12 days, while August is the sunniest, with 12.2 hours of sunshine a day. Over a whole year it rains on roughly 93 days.
McAllen climate guide: monthly averages, seasons and the best time to visit
Common questions
What is the rainiest month in McAllen?
September, at 3.6 inches (92 mm) over about 12 days. February is the driest month, at 1.0 inches (26 mm).
Does it snow in McAllen?
Effectively no. The 2015-2024 record for McAllen shows no regular measurable snowfall.
How long does summer last in McAllen?
Average highs hold at 30°C or above for 7 months of the year. Outside that, January pulls back to 71°F (22°C).
What is the average temperature in McAllen?
76°F (24°C) across all twelve months - about 86°F (30°C) by day and 68°F (20°C) after dark.
When is McAllen at its coldest?
January, with highs of 71°F (22°C) and lows near 53°F (12°C). The coldest day in the 2015-2024 record fell to 23°F (-5°C).
How humid does McAllen get?
Relative humidity averages 69% across the year, which reads as fairly humid. Paired with August heat, muggy afternoons are routine.
What is the hottest month in McAllen?
August, averaging 98°F (36°C) by day and 80°F (26°C) overnight. The hottest single day in our 2015-2024 record for this location reached 108°F (42°C).
What is the best time to visit McAllen?
Aim for December to March if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 76°F (24°C) against roughly 6 wet days a month. For the same question asked the other way round, see where else is warm in December.