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December Weather in Junction City, United States

Last updated: June 24, 2025

In December, the average temperature in Junction City, United States hovers around 3°C (37°F). During this time, temperatures can dip to a chilling -17°C (2°F) or rise to a comfortable 23°C (74°F). Expect about 27 mm (1.1 in) of precipitation spread over 3 days, with an average humidity of 84% ensuring a damp atmosphere. Stay prepared for a mix of weather conditions!

December Temperature in Junction City

In December in Junction City, the average temperature is 3°C (37°F). The maximum can reach 23°C (74°F), while the minimum can plummet to as low as -17°C (2°F). Be sure to pack layers and prepare for a wide range of temperatures if you're planning to travel during this time.

December Weather in Junction City: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Junction City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Junction City, December typically has an average temperature of 3°C (37°F), with highs reaching up to 23°C (74°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec323246546578817772574437
Data source: Temperature data for Junction City 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 Junction City

In Junction City in December, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

December Precipitation Trends in Junction City

The chart displays monthly precipitation patterns in Junction City, 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 Junction City, December typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec32298370189828612271963327
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Junction City

In Junction City in December humidity is 84%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions brisk and invigorating, yet requiring extra layers to stay comfortable.

December Average Humidity in Junction City

This chart illustrates the average monthly humidity levels in Junction City, 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 Junction City is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Junction City

In Junction City 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 Junction City, you can check the information here.

Maximum UV Index Levels in Junction City for December

The chart shows the monthly maximum UV Index (UVI) for Junction City 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 Junction City typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Junction City 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 Junction City Compares to Other Months

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

This table compares monthly weather conditions in Junction City, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)32 mm (1.3 inches)76%moderate
February Weather0°C (33°F)29 mm (1.1 inches)77%moderate
March Weather8°C (47°F)83 mm (3.3 inches)70%high
April Weather12°C (55°F)70 mm (2.8 inches)73%very high
May Weather19°C (66°F)189 mm (7.4 inches)82%very high
June Weather26°C (78°F)82 mm (3.2 inches)82%extreme
July Weather27°C (81°F)86 mm (3.4 inches)81%extreme
August Weather25°C (77°F)122 mm (4.8 inches)78%very high
September Weather22°C (73°F)71 mm (2.8 inches)71%very high
October Weather14°C (57°F)96 mm (3.8 inches)71%high
November Weather7°C (44°F)33 mm (1.3 inches)81%moderate
December Weather3°C (37°F)27 mm (1.1 inches)84%moderate

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