nomadseason

December Weather in Millbrook, United States

Last updated: June 24, 2025

In Millbrook, United States, the average temperature in December hovers around 11°C (52°F). While temperatures can dip as low as -5°C (23°F), they can also rise to a comfortable 27°C (80°F). Expect a precipitation amount of 138 mm (5.4 in) over approximately 12 days, contributing to an average humidity of 88%.

December Temperature in Millbrook

In December in Millbrook, the average temperature is 11°C (52°F). Maximums can reach 27°C (80°F) and minimums can be as low as -5°C (23°F). Be prepared for a range of temperatures, making it ideal for layering your clothing while exploring the area.

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

The chart illustrates December temperature patterns in Millbrook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Millbrook, December typically has an average temperature of 11°C (52°F), with highs reaching up to 27°C (80°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec495560657479828279705652
Data source: Temperature data for Millbrook generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Millbrook

In Millbrook in December, the precipitation amount is 138 mm (5.4 in) spread over a period of 12 days.

December Precipitation Trends in Millbrook

The chart displays monthly precipitation patterns in Millbrook, 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 Millbrook, December typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec12212811012111811393938711575138
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Millbrook

In Millbrook in December, humidity is 88%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and the air feel thick, encouraging you to seek shelter or stay hydrated as you explore.

December Average Humidity in Millbrook

This chart illustrates the average monthly humidity levels in Millbrook, 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 Millbrook is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Millbrook

In Millbrook 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 Millbrook for better planning.

Maximum UV Index Levels in Millbrook for December

The chart shows the monthly maximum UV Index (UVI) for Millbrook 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 Millbrook typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
Data source: Millbrook 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 Millbrook Compares to Other Months

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

This table compares monthly weather conditions in Millbrook, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)122 mm (4.8 inches)85%moderate
February Weather13°C (56°F)128 mm (5.0 inches)84%high
March Weather16°C (60°F)110 mm (4.3 inches)82%very high
April Weather19°C (66°F)121 mm (4.8 inches)82%very high
May Weather24°C (75°F)118 mm (4.6 inches)81%extreme
June Weather26°C (80°F)113 mm (4.5 inches)77%extreme
July Weather28°C (83°F)93 mm (3.7 inches)77%extreme
August Weather28°C (82°F)93 mm (3.7 inches)72%extreme
September Weather26°C (79°F)87 mm (3.4 inches)73%very high
October Weather21°C (70°F)115 mm (4.5 inches)73%very high
November Weather13°C (56°F)75 mm (3.0 inches)85%high
December Weather11°C (52°F)138 mm (5.4 inches)88%moderate

Compare Millbrook's Climate with Cities Worldwide