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December Weather in Lead, United States

Last updated: June 24, 2025

In December, the average temperature in Lead, United States hovers around -3°C (26°F), with extremes reaching a chilly -27°C (-17°F) and a surprisingly mild 17°C (64°F). Expect about 40 mm (1.6 in) of precipitation spread across 9 days, and a notable average humidity of 79%. Stay prepared for the varied weather!

December Temperature in Lead

In December in Lead, the average temperature is -3°C (26°F), with maximum values reaching 17°C (64°F) and minimums dropping as low as -27°C (-17°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Lead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lead, December typically has an average temperature of -3°C (26°F), with highs reaching up to 17°C (64°F) and lows dropping to around -27°C (-17°F).
JanFebMarAprMayJunJulAugSepOctNovDec231832364761676457393326
Data source: Temperature data for Lead 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 Lead

In Lead in December, the precipitation amount is 40 mm (1.6 in) over the course of 9 days.

December Precipitation Trends in Lead

The chart displays monthly precipitation patterns in Lead, 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 Lead, December typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec294254971331061448862753040
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lead

In Lead in December, humidity is 79%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration brisk and invigorating, yet challenging for those unaccustomed to the cold dampness.

December Average Humidity in Lead

This chart illustrates the average monthly humidity levels in Lead, 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 Lead is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%70%70%76%84%85%85%77%73%74%79%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Lead

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

Maximum UV Index Levels in Lead for December

The chart shows the monthly maximum UV Index (UVI) for Lead 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 Lead typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346991111108532
Data source: Lead 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 Lead Compares to Other Months

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

This table compares monthly weather conditions in Lead, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)29 mm (1.2 inches)77%moderate
February Weather-8°C (19°F)42 mm (1.6 inches)80%moderate
March Weather0°C (32°F)54 mm (2.1 inches)70%high
April Weather2°C (36°F)97 mm (3.8 inches)70%very high
May Weather8°C (47°F)133 mm (5.2 inches)76%very high
June Weather16°C (61°F)106 mm (4.2 inches)84%extreme
July Weather19°C (67°F)144 mm (5.7 inches)85%extreme
August Weather18°C (64°F)88 mm (3.5 inches)84%very high
September Weather14°C (57°F)62 mm (2.5 inches)77%very high
October Weather4°C (40°F)75 mm (2.9 inches)73%moderate
November Weather0°C (33°F)30 mm (1.2 inches)74%moderate
December Weather-3°C (26°F)40 mm (1.6 inches)79%low

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