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December Weather in Rochelle, United States

Last updated: June 24, 2025

In Rochelle, United States, the average temperature in December hovers around 12°C (54°F), with minimums dipping to -5°C (24°F) and maximums reaching up to 26°C (80°F). Expect approximately 124 mm (4.9 in) of precipitation spread over 10 days, and enjoy high humidity levels at 88% throughout the month.

December Temperature in Rochelle

In December in Rochelle, the average temperature is 12°C (54°F). Maximums can reach 26°C (80°F), while minimums can drop as low as -5°C (24°F). This wide temperature range makes Rochelle a destination suitable for travelers seeking both warm and cool experiences during this month.

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 12°C (54°F), with highs reaching up to 26°C (80°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec515761677581838280715853
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 124 mm (4.9 in) spread over a duration of 10 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 124 mm (4.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec801158510776851051001079458124
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 88%. With an average temperature of 12°C (54°F), this humidity feels like a thick, damp blanket, making traveling a bit uncomfortable as the air clings to your skin, causing you to sweat even in cooler weather.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Rochelle for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
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 Weather11°C (51°F)80 mm (3.2 inches)85%moderate
February Weather14°C (57°F)115 mm (4.5 inches)82%high
March Weather16°C (62°F)84 mm (3.3 inches)80%very high
April Weather19°C (67°F)107 mm (4.2 inches)76%very high
May Weather24°C (76°F)76 mm (3.0 inches)73%extreme
June Weather27°C (81°F)85 mm (3.4 inches)74%extreme
July Weather28°C (83°F)105 mm (4.1 inches)80%extreme
August Weather28°C (83°F)100 mm (3.9 inches)79%extreme
September Weather26°C (80°F)107 mm (4.2 inches)83%very high
October Weather22°C (72°F)94 mm (3.7 inches)77%very high
November Weather14°C (58°F)58 mm (2.3 inches)84%high
December Weather12°C (54°F)124 mm (4.9 inches)88%moderate

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