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December Weather in Rochelle, United States

Last updated: June 24, 2025

In December, the average temperature in Rochelle, United States hovers around 0°C (32°F), with the possibility of a chilling minimum of -22°C (-6°F) and a balmy maximum of 19°C (67°F). Expect 48 mm (1.9 in) of precipitation spread over 6 days, contributing to an average humidity of 84%.

December Temperature in Rochelle

In December in Rochelle, the average temperature is 0°C (32°F). Maximum temperatures can reach up to 19°C (67°F), while minimum temperatures can drop as low as -22°C (-6°F). Be prepared for a wide range of temperatures when traveling during this month, and pack accordingly!

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

The chart illustrates December temperature patterns in Rochelle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rochelle, December typically has an average temperature of 0°C (32°F), with highs reaching up to 19°C (67°F) and lows dropping to around -22°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec232539486172757367533832
Data source: Temperature data for Rochelle 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 Rochelle

In Rochelle in December, the precipitation amount is 48 mm (1.9 in) distributed over 6 days.

December Precipitation Trends in Rochelle

The chart displays monthly precipitation patterns in Rochelle, 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 Rochelle, December typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec60577710816812579761121195148
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Rochelle

In Rochelle in December, humidity is 84%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that seeps into your clothes, making traveling uncomfortable and necessitating extra layers to stay warm despite the moisture-laden air.

December Average Humidity in Rochelle

This chart illustrates the average monthly humidity levels in Rochelle, 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 Rochelle is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Rochelle

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

Maximum UV Index Levels in Rochelle for December

The chart shows the monthly maximum UV Index (UVI) for Rochelle 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 Rochelle typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098632
Data source: Rochelle 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 Rochelle Compares to Other Months

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

This table compares monthly weather conditions in Rochelle, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)60 mm (2.3 inches)82%moderate
February Weather-4°C (26°F)57 mm (2.2 inches)83%moderate
March Weather4°C (39°F)77 mm (3.0 inches)84%high
April Weather9°C (48°F)108 mm (4.3 inches)85%very high
May Weather16°C (61°F)168 mm (6.6 inches)79%very high
June Weather22°C (72°F)125 mm (4.9 inches)82%very high
July Weather24°C (76°F)79 mm (3.1 inches)80%very high
August Weather23°C (73°F)76 mm (3.0 inches)81%very high
September Weather20°C (68°F)112 mm (4.4 inches)80%very high
October Weather12°C (54°F)119 mm (4.7 inches)82%high
November Weather3°C (38°F)51 mm (2.0 inches)88%moderate
December Weather0°C (32°F)48 mm (1.9 inches)84%low

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