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December Weather in Hollister, United States

Last updated: June 24, 2025

In Hollister, United States during December, the average temperature hovers around 6°C (43°F). Expect a minimum of -10°C (13°F) and a maximum of 26°C (78°F), offering a wide range of conditions. With a precipitation amount of 74 mm (2.9 in) spread over 8 days, your chances of encountering some rain are high. Additionally, the average humidity sits at a notable 87%, making for a brisk but potentially damp experience.

December Temperature in Hollister

In December in Hollister, the average temperature is 6°C (43°F). The maximum can reach 26°C (78°F), while the minimum can drop to as low as -10°C (13°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during outdoor activities.

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

The chart illustrates December temperature patterns in Hollister, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hollister, December typically has an average temperature of 6°C (43°F), with highs reaching up to 26°C (78°F) and lows dropping to around -10°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec374051576776807773604843
Data source: Temperature data for Hollister 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 Hollister

In Hollister in December, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.

December Precipitation Trends in Hollister

The chart displays monthly precipitation patterns in Hollister, 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 Hollister, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec81941401561728777134531266974
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hollister

In Hollister in December, humidity is 87%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and necessitating warm, breathable layers for traveling.

December Average Humidity in Hollister

This chart illustrates the average monthly humidity levels in Hollister, 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 Hollister is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hollister

In Hollister 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 Hollister, you can check the information here.

Maximum UV Index Levels in Hollister for December

The chart shows the monthly maximum UV Index (UVI) for Hollister 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 Hollister typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Hollister 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 Hollister Compares to Other Months

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

This table compares monthly weather conditions in Hollister, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)80 mm (3.2 inches)81%moderate
February Weather4°C (40°F)94 mm (3.7 inches)78%high
March Weather10°C (51°F)140 mm (5.5 inches)76%very high
April Weather14°C (57°F)156 mm (6.1 inches)78%very high
May Weather20°C (67°F)172 mm (6.8 inches)83%extreme
June Weather24°C (76°F)87 mm (3.4 inches)83%extreme
July Weather26°C (80°F)77 mm (3.0 inches)78%extreme
August Weather25°C (77°F)134 mm (5.3 inches)68%very high
September Weather23°C (74°F)53 mm (2.1 inches)64%very high
October Weather16°C (60°F)126 mm (5.0 inches)70%high
November Weather9°C (48°F)69 mm (2.7 inches)83%moderate
December Weather6°C (43°F)74 mm (2.9 inches)87%moderate

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