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December Weather in De Forest, United States

Last updated: June 24, 2025

In December, the average temperature in De Forest, United States hovers around -2°C (29°F). Visitors can expect chilly lows of -22°C (-7°F) and surprisingly warm highs of 18°C (65°F). Precipitation is noteworthy, with an average of 46 mm (1.8 in) falling over 6 days. Coupled with an average humidity of 81%, be prepared for a brisk, yet potentially wet atmosphere!

December Temperature in De Forest

In December in De Forest, the average temperature is -2°C (29°F). The maximum can reach 18°C (65°F), while the minimum can drop as low as -22°C (-7°F). Be prepared for a wide range of temperatures if you're planning to travel during this month.

December Weather in De Forest: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in De Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In De Forest, December typically has an average temperature of -2°C (29°F), with highs reaching up to 18°C (65°F) and lows dropping to around -22°C (-7°F).
JanFebMarAprMayJunJulAugSepOctNovDec212235455970747164513629
Data source: Temperature data for De Forest 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 De Forest

In De Forest in December, the precipitation amount is 46 mm (1.8 in) over a span of 6 days.

December Precipitation Trends in De Forest

The chart displays monthly precipitation patterns in De Forest, 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 De Forest, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec51535799130114991061101184346
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in De Forest

In De Forest in December humidity is 81%. With an average temperature of -2°C (29°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm while traveling.

December Average Humidity in De Forest

This chart illustrates the average monthly humidity levels in De Forest, 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 De Forest is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in De Forest

In De Forest in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in De Forest, you can visit Hourly UV Index in De Forest.

Maximum UV Index Levels in De Forest for December

The chart shows the monthly maximum UV Index (UVI) for De Forest 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 De Forest typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101098532
Data source: De Forest 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 De Forest Compares to Other Months

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

This table compares monthly weather conditions in De Forest, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)51 mm (2.0 inches)85%moderate
February Weather-6°C (22°F)53 mm (2.1 inches)85%moderate
March Weather2°C (35°F)57 mm (2.3 inches)85%moderate
April Weather7°C (46°F)99 mm (3.9 inches)85%very high
May Weather15°C (59°F)130 mm (5.1 inches)78%very high
June Weather21°C (70°F)114 mm (4.5 inches)80%very high
July Weather24°C (75°F)99 mm (3.9 inches)78%very high
August Weather22°C (71°F)106 mm (4.2 inches)76%very high
September Weather18°C (65°F)110 mm (4.3 inches)79%very high
October Weather11°C (51°F)118 mm (4.6 inches)83%moderate
November Weather2°C (36°F)43 mm (1.7 inches)88%moderate
December Weather-2°C (29°F)46 mm (1.8 inches)81%low

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