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December Weather in Brewster, United States

Last updated: June 24, 2025

In December, the average temperature in Brewster, United States hovers around -2°C (29°F). While the mercury can plunge to a chilling -23°C (-10°F), it can also rise to a surprisingly warm 21°C (70°F). Expect around 36 mm (1.4 in) of precipitation over 5 days, with an average humidity level of 79%, creating a crisp yet variable atmosphere.

December Temperature in Brewster

In December in Brewster, the average temperature is -2°C (29°F), with maximums reaching 21°C (70°F) and minimums dropping as low as -23°C (-10°F). It’s a time for travelers to prepare for significant temperature fluctuations and enjoy a unique winter experience.

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

The chart illustrates December temperature patterns in Brewster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brewster, December typically has an average temperature of -2°C (29°F), with highs reaching up to 21°C (70°F) and lows dropping to around -23°C (-10°F).
JanFebMarAprMayJunJulAugSepOctNovDec252337465872767266483829
Data source: Temperature data for Brewster 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 Brewster

In Brewster in December, the precipitation amount is 36 mm (1.4 in) over the course of 5 days.

December Precipitation Trends in Brewster

The chart displays monthly precipitation patterns in Brewster, 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 Brewster, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec1923674911491839068542636
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Brewster

In Brewster in December, humidity is 79%. With an average temperature of -2°C (29°F), this humidity feels like a heavy, bone-chilling dampness that can make traveling quite uncomfortable and intensifies the cold.

December Average Humidity in Brewster

This chart illustrates the average monthly humidity levels in Brewster, 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 Brewster is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%81%69%71%80%83%84%84%77%72%80%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Brewster

In Brewster 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 Brewster, you can check the information here.

Maximum UV Index Levels in Brewster for December

The chart shows the monthly maximum UV Index (UVI) for Brewster 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 Brewster typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110108643
Data source: Brewster 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 Brewster Compares to Other Months

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

This table compares monthly weather conditions in Brewster, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)19 mm (0.8 inches)73%moderate
February Weather-5°C (24°F)23 mm (0.9 inches)81%moderate
March Weather3°C (38°F)67 mm (2.6 inches)69%high
April Weather8°C (46°F)49 mm (1.9 inches)71%very high
May Weather14°C (58°F)114 mm (4.5 inches)80%very high
June Weather22°C (72°F)91 mm (3.6 inches)83%extreme
July Weather24°C (76°F)83 mm (3.3 inches)84%very high
August Weather22°C (73°F)90 mm (3.5 inches)84%very high
September Weather19°C (66°F)68 mm (2.7 inches)77%very high
October Weather9°C (48°F)54 mm (2.1 inches)72%high
November Weather3°C (38°F)26 mm (1.0 inches)80%moderate
December Weather-2°C (29°F)36 mm (1.4 inches)79%moderate

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