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December Weather in La Grange, United States

Last updated: June 24, 2025

In December, the average temperature in La Grange, United States hovers around 5°C (40°F). Expect chilly nights with a minimum temperature plummeting to -15°C (5°F), while daytime highs can reach a pleasant 21°C (71°F). This month brings about 107 mm (4.2 in) of precipitation spread over 10 days, accompanied by a notable humidity level of 87%. Prepare for a mix of cold and wet conditions as you explore!

December Temperature in La Grange

In December in La Grange, the average temperature is 5°C (40°F), with maximums reaching up to 21°C (71°F) and minimums dropping as low as -15°C (5°F). Travelers should be prepared for a wide range of temperatures, so dressing in layers is advisable.

December Weather in La Grange: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in La Grange, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Grange, December typically has an average temperature of 5°C (40°F), with highs reaching up to 21°C (71°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec353947556774787671604540
Data source: Temperature data for La Grange 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 La Grange

In La Grange in December, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.

December Precipitation Trends in La Grange

The chart displays monthly precipitation patterns in La Grange, 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 La Grange, December typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec87127137139125151999510910393107
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in La Grange

In La Grange in December, humidity is 87%. With an average temperature of 5°C (40°F), this humidity feels like a damp chill that wraps around you, making outdoor excursions less enjoyable and requiring extra layers to stay comfortable while exploring.

December Average Humidity in La Grange

This chart illustrates the average monthly humidity levels in La Grange, 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 La Grange is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in La Grange

In La Grange 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 La Grange, you can check the information here.

Maximum UV Index Levels in La Grange for December

The chart shows the monthly maximum UV Index (UVI) for La Grange 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 La Grange typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108743
Data source: La Grange 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 La Grange Compares to Other Months

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

This table compares monthly weather conditions in La Grange, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (35°F)87 mm (3.4 inches)87%moderate
February Weather4°C (39°F)127 mm (5.0 inches)85%moderate
March Weather8°C (47°F)137 mm (5.4 inches)86%high
April Weather13°C (56°F)139 mm (5.5 inches)84%very high
May Weather19°C (67°F)125 mm (4.9 inches)79%very high
June Weather24°C (75°F)151 mm (5.9 inches)82%extreme
July Weather26°C (78°F)99 mm (3.9 inches)79%very high
August Weather24°C (76°F)95 mm (3.8 inches)70%very high
September Weather22°C (71°F)109 mm (4.3 inches)69%very high
October Weather16°C (60°F)103 mm (4.1 inches)76%high
November Weather7°C (45°F)93 mm (3.7 inches)88%moderate
December Weather5°C (40°F)107 mm (4.2 inches)87%moderate

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