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December Weather in Mullen, United States

Last updated: June 24, 2025

In Mullen, United States, the average temperature in December hovers around -1°C (30°F). Expect chilling lows that can plummet to -24°C (-11°F), while rare warm days may reach up to 22°C (72°F). With an average humidity of 78%, the air often feels crisp and cool. That said, be prepared for a bit of moisture, as 27 mm (1.1 in) of precipitation typically falls over 4 days this month.

December Temperature in Mullen

In December in Mullen, the average temperature is -1°C (30°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -24°C (-11°F). Travelers should be prepared for a wide range of temperatures during this month.

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

The chart illustrates December temperature patterns in Mullen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mullen, December typically has an average temperature of -1°C (30°F), with highs reaching up to 22°C (72°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec272437455670757165473830
Data source: Temperature data for Mullen 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 Mullen

In Mullen in December, the total precipitation amount is 27 mm (1.1 in) over a span of 4 days.

December Precipitation Trends in Mullen

The chart displays monthly precipitation patterns in Mullen, 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 Mullen, December typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec1624655212964667554472227
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mullen

In Mullen in December humidity is 78%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that seeps into your bones, making traveling outdoors a brisk challenge.

December Average Humidity in Mullen

This chart illustrates the average monthly humidity levels in Mullen, 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 Mullen is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%80%64%64%76%79%77%79%70%64%75%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mullen

In Mullen in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Mullen, you can check the information here.

Maximum UV Index Levels in Mullen for December

The chart shows the monthly maximum UV Index (UVI) for Mullen 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 Mullen typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101111109643
Data source: Mullen 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 Mullen Compares to Other Months

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

This table compares monthly weather conditions in Mullen, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)16 mm (0.6 inches)73%moderate
February Weather-5°C (24°F)24 mm (1.0 inches)80%moderate
March Weather3°C (38°F)65 mm (2.6 inches)64%high
April Weather7°C (45°F)52 mm (2.1 inches)64%very high
May Weather13°C (57°F)129 mm (5.1 inches)76%very high
June Weather21°C (71°F)64 mm (2.5 inches)79%extreme
July Weather24°C (75°F)66 mm (2.6 inches)77%extreme
August Weather22°C (72°F)75 mm (2.9 inches)79%very high
September Weather18°C (65°F)54 mm (2.1 inches)70%very high
October Weather8°C (47°F)47 mm (1.8 inches)64%high
November Weather3°C (38°F)22 mm (0.8 inches)75%moderate
December Weather-1°C (30°F)27 mm (1.1 inches)78%moderate

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