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December Weather in Alpine, United States

Last updated: June 24, 2025

In December, the average temperature in Alpine, United States hovers around 3°C (37°F). Expect chilly nights with minimums dropping to -12°C (11°F), while daytime highs can reach a comfortable 17°C (63°F). Rainfall is likely, with an average precipitation of 109 mm (4.3 in) spread over 11 days, and humidity levels high at 80%. Prepare accordingly for a brisk and damp month!

December Temperature in Alpine

In December in Alpine, the average temperature is 3°C (37°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -12°C (11°F). Travelers should be prepared for a wide range of temperatures, so packing layers is essential.

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

The chart illustrates December temperature patterns in Alpine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alpine, December typically has an average temperature of 3°C (37°F), with highs reaching up to 17°C (63°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec323540506170777568594537
Data source: Temperature data for Alpine 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 Alpine

In Alpine in December, the precipitation amount is 109 mm (4.3 in), occurring over a span of 11 days.

December Precipitation Trends in Alpine

The chart displays monthly precipitation patterns in Alpine, 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 Alpine, December typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6998931141219515012910613586109
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Alpine

In Alpine in December, humidity is 80%. With an average temperature of 3°C (37°F), this humidity feels like a damp blanket wrapping around you, making outdoor adventures less enjoyable and prompting you to seek cozy indoor activities instead.

December Average Humidity in Alpine

This chart illustrates the average monthly humidity levels in Alpine, 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 Alpine is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Alpine

In Alpine in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Alpine, you can visit Hourly UV Index in Alpine.

Maximum UV Index Levels in Alpine for December

The chart shows the monthly maximum UV Index (UVI) for Alpine 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 Alpine typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Alpine 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 Alpine Compares to Other Months

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

This table compares monthly weather conditions in Alpine, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)69 mm (2.7 inches)84%moderate
February Weather2°C (35°F)98 mm (3.9 inches)82%moderate
March Weather5°C (41°F)93 mm (3.7 inches)81%high
April Weather10°C (51°F)114 mm (4.5 inches)78%very high
May Weather16°C (61°F)121 mm (4.8 inches)69%very high
June Weather21°C (71°F)95 mm (3.7 inches)69%very high
July Weather25°C (77°F)149 mm (5.9 inches)62%very high
August Weather24°C (75°F)129 mm (5.1 inches)65%very high
September Weather20°C (69°F)106 mm (4.2 inches)68%very high
October Weather15°C (59°F)135 mm (5.3 inches)74%high
November Weather7°C (45°F)86 mm (3.4 inches)82%moderate
December Weather3°C (37°F)109 mm (4.3 inches)80%low

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