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December Weather in Hillview, United States

Last updated: June 24, 2025

In December, the average temperature in Hillview, United States hovers around 5°C (41°F), with lows reaching a brisk -13°C (10°F) and highs peaking at a warm 22°C (73°F). Expect precipitation of about 108 mm (4.2 in) throughout approximately 10 days, contributing to an average humidity of 88%. Stay prepared for a mix of chilly and pleasant moments in this vibrant locale!

December Temperature in Hillview

In December in Hillview, the average temperature is 5°C (41°F), with maximums reaching 22°C (73°F) and minimums dropping as low as -13°C (10°F). It's a great time for travelers to pack layers and prepare for a diverse range of weather conditions.

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

The chart illustrates December temperature patterns in Hillview, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hillview, December typically has an average temperature of 5°C (41°F), with highs reaching up to 22°C (73°F) and lows dropping to around -13°C (10°F).
JanFebMarAprMayJunJulAugSepOctNovDec364048566875787671604541
Data source: Temperature data for Hillview 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 Hillview

In Hillview in December, the precipitation amount is 108 mm (4.2 in) distributed over a duration of 10 days.

December Precipitation Trends in Hillview

The chart displays monthly precipitation patterns in Hillview, 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 Hillview, December typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec911371341391281561019311710188108
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hillview

In Hillview in December humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.

December Average Humidity in Hillview

This chart illustrates the average monthly humidity levels in Hillview, 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 Hillview is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hillview

In Hillview 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 Hillview, you can check the information here.

Maximum UV Index Levels in Hillview for December

The chart shows the monthly maximum UV Index (UVI) for Hillview 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 Hillview typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
Data source: Hillview 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 Hillview Compares to Other Months

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

This table compares monthly weather conditions in Hillview, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)91 mm (3.6 inches)87%moderate
February Weather5°C (40°F)137 mm (5.4 inches)86%moderate
March Weather9°C (48°F)134 mm (5.3 inches)86%high
April Weather13°C (56°F)139 mm (5.5 inches)82%very high
May Weather20°C (68°F)128 mm (5.0 inches)82%very high
June Weather24°C (75°F)156 mm (6.1 inches)83%extreme
July Weather26°C (79°F)101 mm (4.0 inches)80%very high
August Weather25°C (77°F)93 mm (3.7 inches)74%very high
September Weather22°C (72°F)117 mm (4.6 inches)71%very high
October Weather16°C (61°F)101 mm (4.0 inches)78%high
November Weather7°C (45°F)88 mm (3.4 inches)88%moderate
December Weather5°C (41°F)108 mm (4.2 inches)88%moderate

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