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December Weather in Sienna Plantation, United States

Last updated: June 24, 2025

In December, the average temperature in Sienna Plantation, United States is a mild 15°C (59°F). However, be prepared for a range of temperatures, with a minimum of -2°C (29°F) and a maximum soaring to 28°C (83°F). Rain may also make an appearance, with 104 mm (4.1 in) of precipitation expected over 9 days. Don’t forget your umbrella, as the average humidity hovers around a high 84%.

December Temperature in Sienna Plantation

In December in Sienna Plantation, the average temperature is 15°C (59°F). The maximum can reach 28°C (83°F), and the minimum can be as low as -2°C (29°F). It's advisable to pack layers to stay comfortable while exploring the diverse weather conditions during your travels.

December Weather in Sienna Plantation: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sienna Plantation, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sienna Plantation, December typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (83°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec555966707882848480736359
Data source: Temperature data for Sienna Plantation 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 Sienna Plantation

In Sienna Plantation in December, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.

December Precipitation Trends in Sienna Plantation

The chart displays monthly precipitation patterns in Sienna Plantation, 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 Sienna Plantation, December typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec858279841621621481921859181105
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sienna Plantation

In Sienna Plantation in December, humidity is 84%. With an average temperature of 15°C (59°F), this humidity feels like an oppressive blanket wrapping around you, making it challenging to enjoy outdoor activities and travel comfortably.

December Average Humidity in Sienna Plantation

This chart illustrates the average monthly humidity levels in Sienna Plantation, 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 Sienna Plantation is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%81%76%79%79%74%72%68%73%75%78%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sienna Plantation

In Sienna Plantation 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 Sienna Plantation.

Maximum UV Index Levels in Sienna Plantation for December

The chart shows the monthly maximum UV Index (UVI) for Sienna Plantation 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 Sienna Plantation typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112111110965
Data source: Sienna Plantation 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 Sienna Plantation Compares to Other Months

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

This table compares monthly weather conditions in Sienna Plantation, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)85 mm (3.4 inches)78%moderate
February Weather15°C (59°F)82 mm (3.2 inches)81%very high
March Weather19°C (66°F)79 mm (3.1 inches)76%very high
April Weather21°C (71°F)84 mm (3.3 inches)79%extreme
May Weather25°C (78°F)162 mm (6.4 inches)79%extreme
June Weather28°C (82°F)162 mm (6.4 inches)74%extreme
July Weather29°C (84°F)148 mm (5.8 inches)71%extreme
August Weather29°C (84°F)192 mm (7.6 inches)68%extreme
September Weather27°C (80°F)185 mm (7.3 inches)73%very high
October Weather23°C (73°F)91 mm (3.6 inches)75%very high
November Weather17°C (63°F)81 mm (3.2 inches)78%high
December Weather15°C (59°F)104 mm (4.1 inches)84%moderate

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