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December Weather in Belvidere, United States

Last updated: June 24, 2025

In December, the average temperature in Belvidere, United States hovers around 0°C (32°F), with extremes ranging from a chilly -22°C (-7°F) to a mild 19°C (66°F). Visitors can expect approximately 51 mm (2.0 in) of precipitation over about 6 days, contributing to an average humidity of 81%.

December Temperature in Belvidere

In December in Belvidere, the average temperature is 0°C (32°F), with maximums reaching 19°C (66°F) and minimums dropping as low as -22°C (-7°F). Travelers should be prepared for chilly conditions, but can also enjoy some milder days suitable for outdoor exploration.

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

The chart illustrates December temperature patterns in Belvidere, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belvidere, December typically has an average temperature of 0°C (32°F), with highs reaching up to 19°C (66°F) and lows dropping to around -22°C (-7°F).
JanFebMarAprMayJunJulAugSepOctNovDec232538476071757266533731
Data source: Temperature data for Belvidere 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 Belvidere

In Belvidere in December, the precipitation amount is 51 mm (2.0 in) over the course of 6 days.

December Precipitation Trends in Belvidere

The chart displays monthly precipitation patterns in Belvidere, 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 Belvidere, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec61567110615911082861041154951
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Belvidere

In Belvidere in December, humidity is 81%. With an average temperature of 0°C (32°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm and dry while traveling.

December Average Humidity in Belvidere

This chart illustrates the average monthly humidity levels in Belvidere, 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 Belvidere 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 Belvidere

In Belvidere 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 Belvidere, you can visit Hourly UV Index in Belvidere.

Maximum UV Index Levels in Belvidere for December

The chart shows the monthly maximum UV Index (UVI) for Belvidere 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 Belvidere typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Belvidere 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 Belvidere Compares to Other Months

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

This table compares monthly weather conditions in Belvidere, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)61 mm (2.4 inches)85%moderate
February Weather-4°C (25°F)56 mm (2.2 inches)85%moderate
March Weather3°C (38°F)71 mm (2.8 inches)85%high
April Weather8°C (47°F)106 mm (4.2 inches)85%very high
May Weather16°C (60°F)159 mm (6.3 inches)78%very high
June Weather22°C (71°F)110 mm (4.3 inches)80%very high
July Weather24°C (75°F)82 mm (3.2 inches)78%very high
August Weather22°C (72°F)86 mm (3.4 inches)76%very high
September Weather19°C (67°F)104 mm (4.1 inches)79%very high
October Weather12°C (53°F)115 mm (4.5 inches)83%moderate
November Weather3°C (38°F)49 mm (1.9 inches)88%moderate
December Weather0°C (32°F)51 mm (2.0 inches)81%low

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