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December Weather in Wiscon, United States

Last updated: June 24, 2025

In December, the average temperature in Wiscon, United States hovers around 17°C (63°F). However, be prepared for a range, as temperatures can dip to a chilly 0°C (32°F) and soar to a warm 28°C (83°F). Precipitation is expected at about 79 mm (3.1 in) over 7 days, coupled with a notable average humidity of 86%.

December Temperature in Wiscon

In December in Wiscon, the average temperature is 17°C (63°F). Maximums can reach 28°C (83°F), while minimums can be as low as 0°C (32°F). This variation in temperature makes it essential for travelers to pack layers for both warm and cool conditions.

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

The chart illustrates December temperature patterns in Wiscon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wiscon, December typically has an average temperature of 17°C (63°F), with highs reaching up to 28°C (83°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec596567727780818181776763
Data source: Temperature data for Wiscon 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 Wiscon

In Wiscon in December, the total precipitation amount is 79 mm (3.1 in) distributed over a period of 7 days.

December Precipitation Trends in Wiscon

The chart displays monthly precipitation patterns in Wiscon, 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 Wiscon, December typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec46662378124217301265183865279
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Wiscon

In Wiscon in December humidity is 86%. With an average temperature of 17°C (63°F), this humidity feels like a heavy blanket wrapping around you, making the air feel thick and slightly stifling for traveling, as every step requires more effort and even a gentle breeze feels refreshing amidst the muggy atmosphere.

December Average Humidity in Wiscon

This chart illustrates the average monthly humidity levels in Wiscon, 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 Wiscon is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%78%77%75%76%79%78%83%81%83%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Wiscon

In Wiscon in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Wiscon.

Maximum UV Index Levels in Wiscon for December

The chart shows the monthly maximum UV Index (UVI) for Wiscon 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 Wiscon typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec689111112121111975
Data source: Wiscon 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 Wiscon Compares to Other Months

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

This table compares monthly weather conditions in Wiscon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)46 mm (1.8 inches)83%high
February Weather18°C (66°F)66 mm (2.6 inches)82%very high
March Weather20°C (67°F)22 mm (0.9 inches)78%very high
April Weather22°C (72°F)78 mm (3.1 inches)77%extreme
May Weather25°C (78°F)124 mm (4.9 inches)75%extreme
June Weather27°C (80°F)217 mm (8.6 inches)76%extreme
July Weather27°C (81°F)301 mm (11.9 inches)79%extreme
August Weather27°C (82°F)265 mm (10.4 inches)78%extreme
September Weather27°C (81°F)183 mm (7.2 inches)83%extreme
October Weather25°C (77°F)86 mm (3.4 inches)81%very high
November Weather20°C (68°F)52 mm (2.1 inches)83%high
December Weather17°C (63°F)79 mm (3.1 inches)86%moderate

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