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December Weather in McLeansboro, United States

Last updated: June 24, 2025

In December, the average temperature in McLeansboro, United States hovers around 5°C (41°F). While you might experience a chill with minimum temperatures dipping to -15°C (5°F), be prepared for warmer days that can soar to a pleasant 22°C (73°F). Expect about 91 mm (3.6 in) of precipitation over 8 days, accompanied by a high average humidity of 88%.

December Temperature in McLeansboro

In December in McLeansboro, the average temperature is 5°C (41°F), with maximums reaching up to 22°C (73°F) and minimums dropping as low as -15°C (5°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates December temperature patterns in McLeansboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McLeansboro, December typically has an average temperature of 5°C (41°F), with highs reaching up to 22°C (73°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec353849576977807773614541
Data source: Temperature data for McLeansboro 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 McLeansboro

In McLeansboro in December, the total precipitation amount is 91 mm (3.6 in) over the course of 8 days.

December Precipitation Trends in McLeansboro

The chart displays monthly precipitation patterns in McLeansboro, 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 McLeansboro, December typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec961111391301341158485771059491
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in McLeansboro

In McLeansboro in December humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.

December Average Humidity in McLeansboro

This chart illustrates the average monthly humidity levels in McLeansboro, 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 McLeansboro is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in McLeansboro

In McLeansboro 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 McLeansboro, you can check the information here.

Maximum UV Index Levels in McLeansboro for December

The chart shows the monthly maximum UV Index (UVI) for McLeansboro 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 McLeansboro typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710111110109753
Data source: McLeansboro 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 McLeansboro Compares to Other Months

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

This table compares monthly weather conditions in McLeansboro, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)96 mm (3.8 inches)86%moderate
February Weather4°C (39°F)111 mm (4.4 inches)84%moderate
March Weather9°C (49°F)139 mm (5.5 inches)84%high
April Weather14°C (57°F)130 mm (5.1 inches)80%very high
May Weather20°C (69°F)134 mm (5.3 inches)82%extreme
June Weather25°C (78°F)115 mm (4.5 inches)83%extreme
July Weather27°C (81°F)84 mm (3.3 inches)79%very high
August Weather25°C (77°F)85 mm (3.3 inches)76%very high
September Weather23°C (73°F)76 mm (3.0 inches)75%very high
October Weather16°C (61°F)105 mm (4.1 inches)74%high
November Weather7°C (46°F)94 mm (3.7 inches)85%moderate
December Weather5°C (41°F)91 mm (3.6 inches)88%moderate

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