The temperatures in Mcallen in December are comfortable with low of 15°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in Mcallen during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Mcallen in December 2023.
If you’re planning to visit Mcallen in the near future, we highly recommend that you review the 14 day weather forecast for Mcallen before you arrive.