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December Weather in Dewey, United States

Last updated: June 24, 2025

In Dewey, United States, the average temperature in December hovers around 6°C (43°F), offering a brisk chill. Be prepared for temperatures that can dip as low as -10°C (13°F) and may soar up to 25°C (77°F). During this month, expect about 36 mm (1.4 in) of precipitation over 5 days, contributing to an average humidity level of 85%, making the air feel quite damp.

December Temperature in Dewey

In December in Dewey, the average temperature is 6°C (43°F). The maximum can reach 25°C (77°F), while the minimum can drop as low as -10°C (13°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates December temperature patterns in Dewey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dewey, December typically has an average temperature of 6°C (43°F), with highs reaching up to 25°C (77°F) and lows dropping to around -10°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec373952586879828075614842
Data source: Temperature data for Dewey 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 Dewey

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

December Precipitation Trends in Dewey

The chart displays monthly precipitation patterns in Dewey, 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 Dewey, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec645511510722010185107871364336
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Dewey

In Dewey in December, humidity is 85%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making travel feel more uncomfortable and limiting your enjoyment of the sights as you navigate the wet, brisk air.

December Average Humidity in Dewey

This chart illustrates the average monthly humidity levels in Dewey, 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 Dewey is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Dewey

In Dewey 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 Dewey, you can check the information here.

Maximum UV Index Levels in Dewey for December

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

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

This table compares monthly weather conditions in Dewey, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)64 mm (2.5 inches)77%moderate
February Weather4°C (39°F)54 mm (2.1 inches)76%high
March Weather11°C (52°F)115 mm (4.5 inches)71%high
April Weather15°C (58°F)107 mm (4.2 inches)73%very high
May Weather20°C (69°F)220 mm (8.7 inches)83%very high
June Weather26°C (79°F)101 mm (4.0 inches)83%extreme
July Weather28°C (82°F)85 mm (3.4 inches)81%extreme
August Weather26°C (80°F)107 mm (4.2 inches)73%very high
September Weather24°C (76°F)87 mm (3.4 inches)67%very high
October Weather16°C (61°F)136 mm (5.4 inches)72%high
November Weather9°C (49°F)43 mm (1.7 inches)82%moderate
December Weather6°C (43°F)36 mm (1.4 inches)85%moderate

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