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December Weather in Smyrna, United States

Last updated: August 27, 2025

In December, the average temperature in Smyrna, United States hovers around 7°C (46°F). Weather can be quite variable, with minimums dipping as low as -10°C (15°F), while highs reach up to 23°C (74°F). Expect approximately 150 mm (5.9 in) of precipitation spread over 11 days, and prepare for the humidity, which averages a high 88%!

December Temperature in Smyrna

In December in Smyrna, the average temperature is 7°C (46°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -10°C (15°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and chilly weather.

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

The chart illustrates December temperature patterns in Smyrna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Smyrna, December typically has an average temperature of 7°C (46°F), with highs reaching up to 23°C (74°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec414553597076807874634945
Data source: Temperature data for Smyrna 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 Smyrna

In Smyrna in December, the total precipitation amount reaches 150 mm (5.9 in) over the course of 11 days.

December Precipitation Trends in Smyrna

The chart displays monthly precipitation patterns in Smyrna, 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 Smyrna, December typically receives around 150 mm (5.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10618317114911814614112613014179150
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Smyrna

In Smyrna in December humidity is 88%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring you to dress in layers to stay warm and dry while exploring.

December Average Humidity in Smyrna

This chart illustrates the average monthly humidity levels in Smyrna, 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 Smyrna 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 Smyrna

In Smyrna 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 Smyrna, you can check the information here.

Maximum UV Index Levels in Smyrna for December

The chart shows the monthly maximum UV Index (UVI) for Smyrna 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 Smyrna typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Smyrna 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 Smyrna Compares to Other Months

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

This table compares monthly weather conditions in Smyrna, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)106 mm (4.2 inches)87%moderate
February Weather7°C (46°F)183 mm (7.2 inches)87%high
March Weather12°C (53°F)171 mm (6.7 inches)85%high
April Weather15°C (59°F)148 mm (5.8 inches)82%very high
May Weather21°C (70°F)118 mm (4.6 inches)83%very high
June Weather25°C (77°F)146 mm (5.7 inches)82%extreme
July Weather27°C (80°F)141 mm (5.6 inches)78%extreme
August Weather25°C (78°F)126 mm (5.0 inches)67%very high
September Weather23°C (74°F)130 mm (5.1 inches)64%very high
October Weather17°C (63°F)141 mm (5.6 inches)74%high
November Weather9°C (49°F)79 mm (3.1 inches)87%moderate
December Weather7°C (46°F)150 mm (5.9 inches)88%moderate

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