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December Weather in Sinton, United States

Last updated: June 24, 2025

In December, the average temperature in Sinton, United States is a comfortable 16°C (61°F). Experience the seasonality with temperatures ranging from a minimum of -1°C (31°F) to a maximum of 31°C (89°F). Expect about 50 mm (2.0 in) of precipitation spread over 5 days, and enjoy the high humidity, averaging 86%.

December Temperature in Sinton

In December in Sinton, the average temperature is 16°C (61°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling during this time!

December Weather in Sinton: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sinton, December typically has an average temperature of 16°C (61°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec586068737983848581756661
Data source: Temperature data for Sinton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Sinton

In Sinton in December, the precipitation amount is 50 mm (2.0 in) over a period of 5 days.

December Precipitation Trends in Sinton

The chart displays monthly precipitation patterns in Sinton, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Sinton, December typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec3832624712416011394132675650
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sinton

In Sinton in December, humidity is 86%. With an average temperature of 16°C (61°F), this humidity feels like walking through a warm, thick blanket of air that clings to your skin, making outdoor activities feel sticky and uncomfortable for traveling.

December Average Humidity in Sinton

This chart illustrates the average monthly humidity levels in Sinton, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Sinton is approximately 86%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Sinton

In Sinton in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sinton.

Maximum UV Index Levels in Sinton for December

The chart shows the monthly maximum UV Index (UVI) for Sinton in December, 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 December, the maximum UV index in Sinton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5810111112121211975
Data source: Sinton December 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 December Weather in Sinton Compares to Other Months

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

This table compares monthly weather conditions in Sinton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (58°F)38 mm (1.5 inches)83%moderate
February Weather16°C (61°F)32 mm (1.2 inches)79%very high
March Weather20°C (68°F)62 mm (2.4 inches)76%very high
April Weather23°C (73°F)47 mm (1.9 inches)77%extreme
May Weather26°C (80°F)124 mm (4.9 inches)80%extreme
June Weather28°C (83°F)160 mm (6.3 inches)73%extreme
July Weather29°C (84°F)113 mm (4.5 inches)66%extreme
August Weather29°C (85°F)94 mm (3.7 inches)65%extreme
September Weather27°C (82°F)132 mm (5.2 inches)73%extreme
October Weather24°C (75°F)66 mm (2.6 inches)76%very high
November Weather19°C (66°F)56 mm (2.2 inches)80%high
December Weather16°C (61°F)50 mm (2.0 inches)86%moderate

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