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December Weather in Lyons Falls, United States

Last updated: June 24, 2025

In Lyons Falls, United States, the average temperature in December hovers around -4°C (25°F). However, conditions can vary dramatically, with lows dipping to -28°C (-18°F) and highs reaching 14°C (58°F). During this month, expect about 123 mm (4.9 in) of precipitation spread over 17 days. The air is quite humid, with an average humidity level of 86%, making it a chilly and damp time of year.

December Temperature in Lyons Falls

In December in Lyons Falls, the average temperature is -4°C (25°F), with a maximum that can reach 14°C (58°F) and a minimum that can drop as low as -28°C (-18°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

December Weather in Lyons Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Lyons Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lyons Falls, December typically has an average temperature of -4°C (25°F), with highs reaching up to 14°C (58°F) and lows dropping to around -28°C (-18°F).
JanFebMarAprMayJunJulAugSepOctNovDec192329425563686659493325
Data source: Temperature data for Lyons Falls 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 Lyons Falls

In Lyons Falls in December, the precipitation amount is 123 mm (4.9 in) over the course of 17 days.

December Precipitation Trends in Lyons Falls

The chart displays monthly precipitation patterns in Lyons Falls, 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 Lyons Falls, December typically receives around 123 mm (4.9 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec1131129712912712318314786175136123
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lyons Falls

In Lyons Falls in December, humidity is 86%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities feel more strenuous and less enjoyable for traveling.

December Average Humidity in Lyons Falls

This chart illustrates the average monthly humidity levels in Lyons Falls, 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 Lyons Falls is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lyons Falls

In Lyons Falls 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 Lyons Falls, you can visit Hourly UV Index in Lyons Falls.

Maximum UV Index Levels in Lyons Falls for December

The chart shows the monthly maximum UV Index (UVI) for Lyons Falls 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 Lyons Falls typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998632
Data source: Lyons Falls 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 Lyons Falls Compares to Other Months

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

This table compares monthly weather conditions in Lyons Falls, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)113 mm (4.5 inches)90%moderate
February Weather-5°C (23°F)112 mm (4.4 inches)90%moderate
March Weather-2°C (29°F)97 mm (3.8 inches)87%high
April Weather5°C (42°F)129 mm (5.1 inches)88%very high
May Weather13°C (55°F)127 mm (5.0 inches)82%very high
June Weather17°C (63°F)123 mm (4.9 inches)79%very high
July Weather20°C (69°F)183 mm (7.2 inches)78%very high
August Weather19°C (66°F)147 mm (5.8 inches)76%very high
September Weather15°C (59°F)86 mm (3.4 inches)78%very high
October Weather9°C (49°F)175 mm (6.9 inches)84%high
November Weather1°C (34°F)136 mm (5.4 inches)89%moderate
December Weather-4°C (25°F)123 mm (4.9 inches)86%low

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