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December Weather in Willis, United States

Last updated: June 24, 2025

In Willis, United States, the average temperature in December is a mild 13°C (56°F). During this month, temperatures can fluctuate between a minimum of -2°C (28°F) and a maximum of 28°C (83°F). Expect 119 mm (4.7 in) of precipitation spread over 10 days, contributing to an average humidity of 87%.

December Temperature in Willis

In December in Willis, the average temperature is 13°C (56°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -2°C (28°F). This diverse temperature range makes Willis an ideal destination for travelers looking to experience varying climates and activities throughout the month.

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

The chart illustrates December temperature patterns in Willis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Willis, December typically has an average temperature of 13°C (56°F), with highs reaching up to 28°C (83°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec525564687681838479716056
Data source: Temperature data for Willis 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 Willis

In Willis in December, the total precipitation amount is 119 mm (4.7 in) over the span of 10 days.

December Precipitation Trends in Willis

The chart displays monthly precipitation patterns in Willis, 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 Willis, December typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec891098410319914610715313910779119
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Willis

In Willis in December humidity is 87%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket wrapping around you, making it challenging to explore comfortably.

December Average Humidity in Willis

This chart illustrates the average monthly humidity levels in Willis, 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 Willis is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Willis

In Willis 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 Willis.

Maximum UV Index Levels in Willis for December

The chart shows the monthly maximum UV Index (UVI) for Willis 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 Willis typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110865
Data source: Willis 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 Willis Compares to Other Months

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

This table compares monthly weather conditions in Willis, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)89 mm (3.5 inches)79%moderate
February Weather13°C (55°F)109 mm (4.3 inches)80%very high
March Weather18°C (64°F)84 mm (3.3 inches)78%very high
April Weather20°C (68°F)103 mm (4.1 inches)79%extreme
May Weather24°C (76°F)199 mm (7.8 inches)81%extreme
June Weather27°C (82°F)146 mm (5.7 inches)77%extreme
July Weather29°C (84°F)107 mm (4.2 inches)71%extreme
August Weather29°C (84°F)153 mm (6.0 inches)67%extreme
September Weather26°C (80°F)139 mm (5.5 inches)69%very high
October Weather21°C (71°F)107 mm (4.2 inches)73%very high
November Weather16°C (60°F)79 mm (3.1 inches)82%high
December Weather13°C (56°F)119 mm (4.7 inches)87%moderate

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