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December Weather in Lyndon, United States

Last updated: June 24, 2025

The average temperature in Lyndon, United States during December is a brisk 4°C (39°F). While you may experience a minimum chill of -17°C (2°F), the mercury can rise to a pleasant maximum of 23°C (73°F). Be prepared for 31 mm (1.2 in) of precipitation over 4 days and note that average humidity hovers around 84%, adding a touch of moisture to the air.

December Temperature in Lyndon

In December in Lyndon, the average temperature is 4°C (39°F). The maximum can reach 23°C (73°F) and the minimum can be as low as -17°C (2°F). Be prepared for a wide range of temperatures when traveling to Lyndon during this time, as it can be chilly, but also offer some warmer days.

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

The chart illustrates December temperature patterns in Lyndon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lyndon, December typically has an average temperature of 4°C (39°F), with highs reaching up to 23°C (73°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec323447556677807772574538
Data source: Temperature data for Lyndon 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 Lyndon

In Lyndon in December, the total precipitation amount is 31 mm (1.2 in) over a span of 4 days.

December Precipitation Trends in Lyndon

The chart displays monthly precipitation patterns in Lyndon, 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 Lyndon, December typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec4934949119711099124791203631
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lyndon

In Lyndon in December, humidity is 84%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions uncomfortable and demanding more layers than you anticipate while traveling.

December Average Humidity in Lyndon

This chart illustrates the average monthly humidity levels in Lyndon, 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 Lyndon is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lyndon

In Lyndon 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 Lyndon, you can check the information here.

Maximum UV Index Levels in Lyndon for December

The chart shows the monthly maximum UV Index (UVI) for Lyndon 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 Lyndon typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109743
Data source: Lyndon 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 Lyndon Compares to Other Months

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

This table compares monthly weather conditions in Lyndon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)49 mm (1.9 inches)76%moderate
February Weather1°C (34°F)34 mm (1.3 inches)77%high
March Weather9°C (48°F)94 mm (3.7 inches)70%high
April Weather13°C (55°F)91 mm (3.6 inches)73%very high
May Weather19°C (66°F)197 mm (7.8 inches)82%very high
June Weather25°C (78°F)110 mm (4.3 inches)82%extreme
July Weather27°C (80°F)99 mm (3.9 inches)81%extreme
August Weather25°C (77°F)123 mm (4.9 inches)78%very high
September Weather22°C (72°F)79 mm (3.1 inches)71%very high
October Weather14°C (58°F)120 mm (4.7 inches)71%high
November Weather7°C (45°F)36 mm (1.4 inches)81%moderate
December Weather4°C (39°F)31 mm (1.2 inches)84%moderate

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