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December Weather in Skyline, United States

Last updated: June 24, 2025

In December, the average temperature in Skyline, United States hovers around 8°C (47°F). Visitors can expect minimum temperatures dipping as low as -8°C (18°F) and reaching a comfortable maximum of 22°C (72°F). The month sees an average precipitation of 149 mm (5.9 in) spread over 12 days, contributing to a quite humid atmosphere with an average humidity of 88%.

December Temperature in Skyline

In December in Skyline, the average temperature is 8°C (47°F), with maximums reaching 22°C (72°F) and minimums dropping as low as -8°C (18°F). Be prepared for a range of temperatures and pack accordingly when traveling during this time.

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

The chart illustrates December temperature patterns in Skyline, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Skyline, December typically has an average temperature of 8°C (47°F), with highs reaching up to 22°C (72°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec434854607075797874645047
Data source: Temperature data for Skyline 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 Skyline

In Skyline in December, the precipitation amount is 149 mm (5.9 in) spread over 12 days.

December Precipitation Trends in Skyline

The chart displays monthly precipitation patterns in Skyline, 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 Skyline, December typically receives around 149 mm (5.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1061811991539813511211311112874149
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Skyline

In Skyline in December, humidity is 88%. With an average temperature of 8°C (47°F), this humidity feels like a thick, damp blanket wrapping around you, making even short walks feel heavy and uninviting for travel.

December Average Humidity in Skyline

This chart illustrates the average monthly humidity levels in Skyline, 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 Skyline is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Skyline

In Skyline 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 Skyline for better planning.

Maximum UV Index Levels in Skyline for December

The chart shows the monthly maximum UV Index (UVI) for Skyline 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 Skyline typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109764
Data source: Skyline 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 Skyline Compares to Other Months

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

This table compares monthly weather conditions in Skyline, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)106 mm (4.2 inches)87%moderate
February Weather9°C (48°F)181 mm (7.1 inches)87%high
March Weather12°C (55°F)199 mm (7.8 inches)85%very high
April Weather16°C (61°F)153 mm (6.0 inches)82%very high
May Weather21°C (70°F)98 mm (3.9 inches)83%extreme
June Weather24°C (76°F)135 mm (5.3 inches)82%extreme
July Weather26°C (79°F)112 mm (4.4 inches)78%extreme
August Weather25°C (78°F)113 mm (4.4 inches)67%very high
September Weather23°C (74°F)111 mm (4.4 inches)64%very high
October Weather18°C (65°F)127 mm (5.0 inches)74%high
November Weather10°C (51°F)74 mm (2.9 inches)87%high
December Weather8°C (47°F)149 mm (5.9 inches)88%moderate

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