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December Weather in Port Neches, United States

Last updated: June 24, 2025

In December, the average temperature in Port Neches, United States is a mild 14°C (58°F). However, be prepared for a range: temperatures can dip to a chilly -1°C (31°F) or rise to a warm 27°C (80°F). Expect about 140 mm (5.5 in) of precipitation over 10 days, and with an average humidity of 83%, it’s best to pack accordingly for a pleasantly damp experience!

December Temperature in Port Neches

In December in Port Neches, the average temperature is 14°C (58°F). Maximum temperatures can reach 27°C (80°F), while minimums can dip as low as -1°C (31°F). Travelers should be prepared for a wide range of temperatures during this time.

December Weather in Port Neches: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Port Neches, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Neches, December typically has an average temperature of 14°C (58°F), with highs reaching up to 27°C (80°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec545865697781838380726157
Data source: Temperature data for Port Neches 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 Port Neches

In Port Neches in December, the total precipitation amount is 140 mm (5.5 in) spread over a period of 10 days.

December Precipitation Trends in Port Neches

The chart displays monthly precipitation patterns in Port Neches, 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 Port Neches, December typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec98907612518918115322820214374140
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Port Neches

In Port Neches in December, humidity is 83%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket enveloping you, making exploration feel heavier and sweatier, so be prepared for a slower pace while traveling.

December Average Humidity in Port Neches

This chart illustrates the average monthly humidity levels in Port Neches, 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 Port Neches is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%81%78%81%79%75%74%73%75%75%79%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Port Neches

In Port Neches 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 Port Neches.

Maximum UV Index Levels in Port Neches for December

The chart shows the monthly maximum UV Index (UVI) for Port Neches 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 Port Neches typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110975
Data source: Port Neches 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 Port Neches Compares to Other Months

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

This table compares monthly weather conditions in Port Neches, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)98 mm (3.8 inches)79%moderate
February Weather14°C (58°F)90 mm (3.5 inches)80%very high
March Weather18°C (65°F)76 mm (3.0 inches)78%very high
April Weather21°C (69°F)125 mm (4.9 inches)81%extreme
May Weather25°C (77°F)189 mm (7.4 inches)79%extreme
June Weather27°C (82°F)181 mm (7.1 inches)75%extreme
July Weather28°C (83°F)153 mm (6.0 inches)74%extreme
August Weather28°C (83°F)228 mm (9.0 inches)73%extreme
September Weather27°C (80°F)202 mm (8.0 inches)75%very high
October Weather22°C (73°F)143 mm (5.6 inches)75%very high
November Weather16°C (62°F)74 mm (2.9 inches)79%high
December Weather14°C (58°F)140 mm (5.5 inches)83%moderate

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