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December Weather in Morrilton, United States

Last updated: June 24, 2025

In December, the average temperature in Morrilton, United States hovers around 8°C (46°F). Expect a wide temperature range, with lows dipping to -9°C (17°F) and highs soaring to 26°C (79°F). This month also brings considerable precipitation, with an average of 106 mm (4.2 in) over 8 days, and an average humidity rate of 87%.

December Temperature in Morrilton

In December in Morrilton, the average temperature is 8°C (46°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as -9°C (17°F). When traveling during this month, be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Morrilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Morrilton, December typically has an average temperature of 8°C (46°F), with highs reaching up to 26°C (79°F) and lows dropping to around -9°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec414454607078817975635046
Data source: Temperature data for Morrilton 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 Morrilton

In Morrilton in December, the precipitation amount is 106 mm (4.2 in) over a span of 8 days.

December Precipitation Trends in Morrilton

The chart displays monthly precipitation patterns in Morrilton, 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 Morrilton, December typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec9114614715318812385122719690106
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Morrilton

In Morrilton in December, humidity is 87%. With an average temperature of 8°C (46°F), this humidity feels like a chilly, damp fog clinging to your skin, making outdoor activities a bit uncomfortable and causing even mild exertion to leave you feeling clammy and cold.

December Average Humidity in Morrilton

This chart illustrates the average monthly humidity levels in Morrilton, 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 Morrilton is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Morrilton

In Morrilton 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 Morrilton for better planning.

Maximum UV Index Levels in Morrilton for December

The chart shows the monthly maximum UV Index (UVI) for Morrilton 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 Morrilton typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Morrilton 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 Morrilton Compares to Other Months

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

This table compares monthly weather conditions in Morrilton, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)91 mm (3.6 inches)82%moderate
February Weather7°C (44°F)146 mm (5.8 inches)79%high
March Weather12°C (54°F)147 mm (5.8 inches)77%very high
April Weather15°C (60°F)153 mm (6.0 inches)78%very high
May Weather21°C (70°F)188 mm (7.4 inches)82%extreme
June Weather26°C (78°F)123 mm (4.9 inches)81%extreme
July Weather27°C (82°F)85 mm (3.3 inches)75%extreme
August Weather26°C (80°F)122 mm (4.8 inches)61%very high
September Weather24°C (76°F)71 mm (2.8 inches)59%very high
October Weather17°C (63°F)96 mm (3.8 inches)69%high
November Weather10°C (50°F)90 mm (3.5 inches)82%moderate
December Weather8°C (46°F)106 mm (4.2 inches)87%moderate

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