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December Weather in Cullman, United States

Last updated: June 24, 2025

In December, the average temperature in Cullman, United States is a cool 9°C (48°F), with a minimum dipping to -7°C (20°F) and a maximum reaching up to 23°C (74°F). Visitors should prepare for 157 mm (6.2 in) of precipitation over 12 days, accompanied by a high average humidity of 88%.

December Temperature in Cullman

In December in Cullman, the average temperature is 9°C (48°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -7°C (20°F). It's advisable to pack layers to comfortably adapt to the varying temperatures while exploring the area.

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

The chart illustrates December temperature patterns in Cullman, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cullman, December typically has an average temperature of 9°C (48°F), with highs reaching up to 23°C (74°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec445056627177807975665148
Data source: Temperature data for Cullman 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 Cullman

In Cullman in December, the total precipitation amount is 157 mm (6.2 in), which falls over the course of 12 days.

December Precipitation Trends in Cullman

The chart displays monthly precipitation patterns in Cullman, 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 Cullman, December typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec11718618414710012710610710513476157
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cullman

In Cullman in December, humidity is 88%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill settling into your bones, making outdoor exploration feel heavy and oppressive.

December Average Humidity in Cullman

This chart illustrates the average monthly humidity levels in Cullman, 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 Cullman is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Cullman

In Cullman in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Cullman for better planning.

Maximum UV Index Levels in Cullman for December

The chart shows the monthly maximum UV Index (UVI) for Cullman 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 Cullman typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109764
Data source: Cullman 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 Cullman Compares to Other Months

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

This table compares monthly weather conditions in Cullman, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)117 mm (4.6 inches)87%moderate
February Weather10°C (50°F)186 mm (7.3 inches)87%high
March Weather13°C (56°F)184 mm (7.3 inches)85%very high
April Weather16°C (62°F)147 mm (5.8 inches)82%very high
May Weather22°C (72°F)100 mm (4.0 inches)83%very high
June Weather25°C (77°F)127 mm (5.0 inches)82%extreme
July Weather27°C (80°F)106 mm (4.2 inches)78%extreme
August Weather26°C (80°F)107 mm (4.2 inches)67%very high
September Weather24°C (76°F)104 mm (4.1 inches)64%very high
October Weather19°C (66°F)134 mm (5.3 inches)74%high
November Weather11°C (51°F)76 mm (3.0 inches)87%high
December Weather9°C (48°F)157 mm (6.2 inches)88%moderate

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