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December Weather in Johnsonville, United States

Last updated: June 24, 2025

In December, the average temperature in Johnsonville, United States hovers around 11°C (52°F), offering a mild climate. However, be prepared for a range of temperatures, with minimums plummeting to -6°C (21°F) and maximums reaching up to 26°C (80°F). During this month, expect precipitation of 133 mm (5.3 in) spread over approximately 9 days, coupled with a high average humidity of 84%.

December Temperature in Johnsonville

In December in Johnsonville, the average temperature is 11°C (52°F). Maximum temperatures can reach 26°C (80°F), while minimums can drop as low as -6°C (21°F). This variety in temperatures makes it essential for travelers to pack layers and be prepared for both warm and cold conditions.

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

The chart illustrates December temperature patterns in Johnsonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnsonville, December typically has an average temperature of 11°C (52°F), with highs reaching up to 26°C (80°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec495458657378818077695551
Data source: Temperature data for Johnsonville 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 Johnsonville

In Johnsonville in December, the precipitation amount is 133 mm (5.3 in) spread over 9 days.

December Precipitation Trends in Johnsonville

The chart displays monthly precipitation patterns in Johnsonville, 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 Johnsonville, December typically receives around 133 mm (5.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec698672951081491722071585483134
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Johnsonville

In Johnsonville in December, humidity is 84%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket, making it uncomfortable for traveling as the dampness clings to your skin and can leave you feeling sluggish and fatigued.

December Average Humidity in Johnsonville

This chart illustrates the average monthly humidity levels in Johnsonville, 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 Johnsonville is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%79%78%78%78%82%81%81%78%82%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Johnsonville

In Johnsonville in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Johnsonville for better planning.

Maximum UV Index Levels in Johnsonville for December

The chart shows the monthly maximum UV Index (UVI) for Johnsonville 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 Johnsonville typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Johnsonville 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 Johnsonville Compares to Other Months

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

This table compares monthly weather conditions in Johnsonville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)69 mm (2.7 inches)83%moderate
February Weather12°C (55°F)86 mm (3.4 inches)79%high
March Weather14°C (58°F)72 mm (2.8 inches)79%very high
April Weather18°C (65°F)94 mm (3.7 inches)78%very high
May Weather23°C (74°F)108 mm (4.3 inches)78%extreme
June Weather26°C (78°F)149 mm (5.9 inches)78%extreme
July Weather27°C (81°F)172 mm (6.8 inches)82%extreme
August Weather27°C (80°F)207 mm (8.1 inches)81%extreme
September Weather25°C (77°F)158 mm (6.2 inches)81%very high
October Weather21°C (69°F)54 mm (2.1 inches)78%very high
November Weather13°C (56°F)83 mm (3.2 inches)82%high
December Weather11°C (52°F)133 mm (5.3 inches)84%moderate

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