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December Weather in Beloit, United States

Last updated: June 24, 2025

In Beloit, United States, the average temperature in December hovers around 2°C (35°F). However, be prepared for a range of temperatures, with minimums dipping to -16°C (3°F) and maximums soaring up to 23°C (74°F). During this time, you can expect about 36 mm (1.4 in) of precipitation spread over 3 days, coupled with an average humidity level of 83%.

December Temperature in Beloit

In December in Beloit, the average temperature is 2°C (35°F). The maximum can reach 23°C (74°F) and the minimum can be as low as -16°C (3°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and chilly nights.

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

The chart illustrates December temperature patterns in Beloit, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Beloit, December typically has an average temperature of 2°C (35°F), with highs reaching up to 23°C (74°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec303045536478817772554335
Data source: Temperature data for Beloit 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 Beloit

In Beloit in December, the precipitation amount is 36 mm (1.4 in) over a period of 3 days.

December Precipitation Trends in Beloit

The chart displays monthly precipitation patterns in Beloit, 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 Beloit, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec25237349180648210357822337
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Beloit

In Beloit in December humidity is 83%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel quite taxing.

December Average Humidity in Beloit

This chart illustrates the average monthly humidity levels in Beloit, 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 Beloit is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Beloit

In Beloit 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 Beloit, you can check the information here.

Maximum UV Index Levels in Beloit for December

The chart shows the monthly maximum UV Index (UVI) for Beloit 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 Beloit typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Beloit 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 Beloit Compares to Other Months

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

This table compares monthly weather conditions in Beloit, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)25 mm (1.0 inches)74%moderate
February Weather-1°C (31°F)23 mm (0.9 inches)78%moderate
March Weather7°C (45°F)73 mm (2.9 inches)67%high
April Weather12°C (54°F)49 mm (1.9 inches)70%very high
May Weather18°C (65°F)180 mm (7.1 inches)82%very high
June Weather26°C (78°F)64 mm (2.5 inches)81%extreme
July Weather27°C (81°F)82 mm (3.2 inches)80%extreme
August Weather25°C (77°F)103 mm (4.1 inches)80%very high
September Weather22°C (72°F)57 mm (2.3 inches)73%very high
October Weather13°C (55°F)82 mm (3.2 inches)71%high
November Weather6°C (43°F)23 mm (0.9 inches)79%moderate
December Weather2°C (35°F)36 mm (1.4 inches)83%moderate

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