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December Weather in Junction City, United States

Last updated: June 24, 2025

In Junction City, United States, the average temperature in December hovers around 11°C (52°F). Visitors should be prepared for a varied climate, as temperatures can dip to a chilly -3°C (26°F) or rise to a warm 28°C (82°F). Expect a total precipitation of 124 mm (4.9 in) spread over 9 days, and remember that the average humidity is notably high at 88%.

December Temperature in Junction City

In December in Junction City, the average temperature is 11°C (52°F). Maximums can reach 28°C (82°F), while minimums can drop as low as -3°C (26°F). Dress in layers to accommodate the wide temperature range during your travels.

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 11°C (52°F), with highs reaching up to 28°C (82°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec475060647481838278675551
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 precipitation amount is 124 mm (4.9 in) over the course of 9 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 124 mm (4.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec123161158183146120941048112870124
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 88%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and the air feel thick, encouraging you to seek shelter or stay hydrated as you explore.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%78%79%81%77%72%65%63%70%82%88%
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 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 Junction City for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101112111110864
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 Weather8°C (48°F)123 mm (4.8 inches)82%moderate
February Weather10°C (51°F)161 mm (6.3 inches)80%high
March Weather16°C (60°F)158 mm (6.2 inches)78%very high
April Weather18°C (64°F)183 mm (7.2 inches)79%very high
May Weather23°C (74°F)146 mm (5.8 inches)81%extreme
June Weather27°C (81°F)120 mm (4.7 inches)77%extreme
July Weather28°C (83°F)94 mm (3.7 inches)72%extreme
August Weather28°C (83°F)104 mm (4.1 inches)65%extreme
September Weather26°C (79°F)81 mm (3.2 inches)63%very high
October Weather20°C (67°F)128 mm (5.0 inches)70%very high
November Weather13°C (55°F)70 mm (2.8 inches)82%high
December Weather11°C (52°F)124 mm (4.9 inches)88%moderate

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