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December Weather in Merriam Woods, United States

Last updated: June 24, 2025

In December, the average temperature in Merriam Woods, United States hovers around 6°C (43°F). Expect a wide range of temperatures, from a chilly -11°C (12°F) to a pleasant 25°C (78°F). This month sees an average precipitation of 69 mm (2.7 in) over 8 days, resulting in a high humidity level of 87%. Prepare accordingly for a month of varying weather conditions!

December Temperature in Merriam Woods

In December in Merriam Woods, the average temperature is 6°C (43°F). Maximums can reach 25°C (78°F), and minimums can be as low as -11°C (12°F). It's advisable to pack layers to prepare for varying weather conditions while traveling during this time.

December Weather in Merriam Woods: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Merriam Woods, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merriam Woods, December typically has an average temperature of 6°C (43°F), with highs reaching up to 25°C (78°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec363950566776807773604742
Data source: Temperature data for Merriam Woods 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 Merriam Woods

In Merriam Woods in December, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.

December Precipitation Trends in Merriam Woods

The chart displays monthly precipitation patterns in Merriam Woods, 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 Merriam Woods, December typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec86941451661718776119511346769
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Merriam Woods

In Merriam Woods in December, humidity is 87%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and necessitating warm, breathable layers for traveling.

December Average Humidity in Merriam Woods

This chart illustrates the average monthly humidity levels in Merriam Woods, 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 Merriam Woods is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Merriam Woods

In Merriam Woods 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 Merriam Woods, you can check the information here.

Maximum UV Index Levels in Merriam Woods for December

The chart shows the monthly maximum UV Index (UVI) for Merriam Woods 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 Merriam Woods typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810101111109753
Data source: Merriam Woods 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 Merriam Woods Compares to Other Months

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

This table compares monthly weather conditions in Merriam Woods, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (37°F)86 mm (3.4 inches)81%moderate
February Weather4°C (39°F)93 mm (3.7 inches)78%high
March Weather10°C (50°F)145 mm (5.7 inches)76%very high
April Weather13°C (57°F)166 mm (6.6 inches)78%very high
May Weather19°C (67°F)171 mm (6.7 inches)83%very high
June Weather24°C (76°F)87 mm (3.4 inches)83%extreme
July Weather26°C (80°F)76 mm (3.0 inches)78%extreme
August Weather25°C (77°F)119 mm (4.7 inches)68%very high
September Weather23°C (74°F)51 mm (2.0 inches)64%very high
October Weather15°C (60°F)134 mm (5.3 inches)70%high
November Weather8°C (47°F)67 mm (2.7 inches)83%moderate
December Weather6°C (43°F)69 mm (2.7 inches)87%moderate

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