nomadseason

October Weather in McAllen, United States

Last updated: June 24, 2025

In McAllen, United States, the average temperature in October hovers around 25°C (77°F). Expect a minimum of 6°C (43°F) and a maximum of 37°C (99°F), making it quite a warm month. With precipitation totaling 51 mm (2.0 in) over 6 days, it's wise to be prepared for some rain. The average humidity is a comfortable 76%, ensuring the air feels just as pleasant as the temperatures.

October Temperature in McAllen

In October in McAllen, the average temperature is 25°C (77°F). Maximums can reach 37°C (99°F) and minimums can be as low as 6°C (43°F). Travelers should be prepared for a wide range of temperatures, from warm afternoons to cooler evenings.

October Weather in McAllen: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in McAllen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McAllen, October typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec616572778285868884776964
Data source: Temperature data for McAllen generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in McAllen

In McAllen in October, the precipitation amount is 51 mm (2.0 in) over the course of 6 days.

October Precipitation Trends in McAllen

The chart displays monthly precipitation patterns in McAllen, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In McAllen, October typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2021313187811002296513021
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in McAllen

In McAllen in October, humidity is 76%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel muggy and requiring frequent breaks to stay refreshed.

October Average Humidity in McAllen

This chart illustrates the average monthly humidity levels in McAllen, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in McAllen is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in McAllen

In McAllen in October, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in McAllen.

Maximum UV Index Levels in McAllen for October

The chart shows the monthly maximum UV Index (UVI) for McAllen in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in McAllen typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6910111212121211976
Data source: McAllen October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in McAllen Compares to Other Months

Weather in McAllen varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in McAllen, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in McAllen, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (62°F)20 mm (0.8 inches)83%high
February Weather18°C (65°F)21 mm (0.8 inches)79%very high
March Weather22°C (72°F)31 mm (1.2 inches)76%very high
April Weather25°C (78°F)31 mm (1.2 inches)77%extreme
May Weather28°C (83°F)87 mm (3.4 inches)80%extreme
June Weather30°C (86°F)81 mm (3.2 inches)73%extreme
July Weather30°C (87°F)100 mm (3.9 inches)66%extreme
August Weather31°C (88°F)22 mm (0.9 inches)65%extreme
September Weather29°C (84°F)96 mm (3.8 inches)73%extreme
October Weather25°C (77°F)51 mm (2.0 inches)76%very high
November Weather20°C (69°F)30 mm (1.2 inches)80%high
December Weather18°C (64°F)21 mm (0.8 inches)86%high

Compare McAllen's Climate with Cities Worldwide