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December Weather in Lannon, United States

Last updated: June 24, 2025

In December, the average temperature in Lannon, United States hovers around -1°C (30°F). While it can dip as low as -23°C (-8°F), temperatures may also reach a pleasant 19°C (66°F). Expect 46 mm (1.8 in) of precipitation spread over 6 days, with an average humidity of 81%. Embrace the chill, but be prepared for some cozy indoor time!

December Temperature in Lannon

In December in Lannon, the average temperature is -1°C (30°F). Maximum temperatures can reach up to 19°C (66°F), while the minimum can plummet to as low as -23°C (-8°F). Travelers should be prepared for a wide range of temperatures during this month, ensuring they pack accordingly to enjoy their visit.

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

The chart illustrates December temperature patterns in Lannon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lannon, December typically has an average temperature of -1°C (30°F), with highs reaching up to 19°C (66°F) and lows dropping to around -23°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec222436455869747165523730
Data source: Temperature data for Lannon 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 Lannon

In Lannon in December, the precipitation amount is 46 mm (1.8 in) over a span of 6 days.

December Precipitation Trends in Lannon

The chart displays monthly precipitation patterns in Lannon, 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 Lannon, December typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec5451611071261069788981124646
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lannon

In Lannon in December, humidity is 81%. With an average temperature of -1°C (30°F), this humidity feels like an extra layer of chill settles in, making travel uncomfortable and the cold air cling to your skin, dampening the experience with every breath.

December Average Humidity in Lannon

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

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

Maximum UV Index Levels in Lannon for December

The chart shows the monthly maximum UV Index (UVI) for Lannon 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 Lannon typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Lannon 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 Lannon Compares to Other Months

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

This table compares monthly weather conditions in Lannon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)54 mm (2.1 inches)85%moderate
February Weather-5°C (24°F)51 mm (2.0 inches)85%moderate
March Weather2°C (36°F)61 mm (2.4 inches)85%moderate
April Weather7°C (45°F)107 mm (4.2 inches)85%very high
May Weather14°C (58°F)126 mm (5.0 inches)78%very high
June Weather20°C (69°F)106 mm (4.2 inches)80%very high
July Weather23°C (74°F)97 mm (3.8 inches)78%very high
August Weather22°C (71°F)87 mm (3.4 inches)76%very high
September Weather18°C (65°F)98 mm (3.9 inches)79%high
October Weather11°C (52°F)112 mm (4.4 inches)83%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)46 mm (1.8 inches)81%low

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