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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 8°C (46°F). Expect a chilly minimum of -9°C (16°F), while the mercury can rise to a pleasant 23°C (73°F) at its peak. Be prepared for 136 mm (5.4 in) of precipitation spread over 11 days, contributing to an average humidity of 88%. Stay cozy and dry!

December Temperature in Johnsonville

In December in Johnsonville, the average temperature is 8°C (46°F). The maximum can reach 23°C (73°F), while the minimum can drop as low as -9°C (16°F). It's advisable to pack for a wide range of temperatures to ensure a comfortable visit.

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 8°C (46°F), with highs reaching up to 23°C (73°F) and lows dropping to around -9°C (16°F).
JanFebMarAprMayJunJulAugSepOctNovDec414553597077817975645046
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 total precipitation amount reaches 136 mm (5.4 in) over the course of 11 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 136 mm (5.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10517816016912311512511810812888136
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 88%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much more uncomfortable than the temperature alone would suggest.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%81%83%83%80%74%70%73%85%88%
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 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 Johnsonville, you can check the information here.

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 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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 Weather5°C (41°F)105 mm (4.1 inches)86%moderate
February Weather7°C (45°F)178 mm (7.0 inches)85%high
March Weather12°C (53°F)160 mm (6.3 inches)84%high
April Weather15°C (59°F)169 mm (6.7 inches)81%very high
May Weather21°C (70°F)123 mm (4.8 inches)83%very high
June Weather25°C (78°F)115 mm (4.5 inches)83%extreme
July Weather27°C (81°F)125 mm (4.9 inches)80%extreme
August Weather26°C (79°F)118 mm (4.7 inches)73%very high
September Weather24°C (75°F)108 mm (4.2 inches)70%very high
October Weather18°C (64°F)128 mm (5.1 inches)73%high
November Weather10°C (50°F)88 mm (3.5 inches)85%moderate
December Weather8°C (46°F)136 mm (5.4 inches)88%moderate

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