McAllen (TX) Climate by Month
The climate in McAllen is marked by big temperature swings throughout the year.
Temperatures range from very hot during the warmest months
to pleasant in the cooler months.
It receives mid-range precipitation levels.
Let's now guide you through the climate details for a complete overview.
Average day and night temperature
In McAllen, temperatures differ significantly between summer and winter months. Average daytime temperatures range from a very hot 37°C in August, the warmest time of the year, to a pleasant 21°C during cooler months like January. At night, temperatures typically average around 9°C during these months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
On average, McAllen receives a reasonable amount of rainfall, with an annual precipitation of 648 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, September receives high rainfall, averaging 129 mm of precipitation, recorded across 11 rainy days. In contrast, the drier season, February brings less rainfall, with 20 mm over 5 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
The best time of year to visit McAllen in the United States of America
During the months of January, February and December you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
August has an average maximum temperature of 37°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 21°C.
September tops the wettest month list with 129 mm of rainfall.
February is the driest month with 20 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
