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December Weather in Chester Hill, United States

Last updated: June 24, 2025

In December, the average temperature in Chester Hill, United States hovers around 0°C (33°F). Expect a chilly range, with minimums dipping to -15°C (4°F) and maximums reaching up to 18°C (64°F). During this time, you'll encounter approximately 95 mm (3.8 in) of precipitation spread over 12 days, while humidity levels remain high at 88%—perfect for cozy indoor activities!

December Temperature in Chester Hill

In December in Chester Hill, the average temperature is 0°C (33°F). Maximum temperatures can reach 18°C (64°F), while minimum temperatures can drop as low as -15°C (4°F). Be prepared for a wide range of temperatures and pack accordingly when traveling to Chester Hill during this month.

December Weather in Chester Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Chester Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chester Hill, December typically has an average temperature of 0°C (33°F), with highs reaching up to 18°C (64°F) and lows dropping to around -15°C (4°F).
JanFebMarAprMayJunJulAugSepOctNovDec273137485967727064543933
Data source: Temperature data for Chester Hill 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 Chester Hill

In Chester Hill in December, the precipitation amount is 95 mm (3.8 in) spread over 12 days.

December Precipitation Trends in Chester Hill

The chart displays monthly precipitation patterns in Chester Hill, 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 Chester Hill, December typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec79109921191451151211071221178795
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Chester Hill

In Chester Hill in December, humidity is 88%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm and dry.

December Average Humidity in Chester Hill

This chart illustrates the average monthly humidity levels in Chester Hill, 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 Chester Hill is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%89%88%80%79%74%64%67%81%89%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Chester Hill

In Chester Hill 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 Chester Hill, you can visit Hourly UV Index in Chester Hill.

Maximum UV Index Levels in Chester Hill for December

The chart shows the monthly maximum UV Index (UVI) for Chester Hill 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 Chester Hill typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Chester Hill 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 Chester Hill Compares to Other Months

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

This table compares monthly weather conditions in Chester Hill, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)79 mm (3.1 inches)89%moderate
February Weather-1°C (31°F)109 mm (4.3 inches)90%moderate
March Weather3°C (38°F)92 mm (3.6 inches)89%high
April Weather9°C (48°F)119 mm (4.7 inches)88%very high
May Weather15°C (59°F)145 mm (5.7 inches)80%very high
June Weather19°C (67°F)115 mm (4.5 inches)79%very high
July Weather22°C (72°F)121 mm (4.8 inches)74%very high
August Weather21°C (71°F)107 mm (4.2 inches)64%very high
September Weather18°C (64°F)122 mm (4.8 inches)67%very high
October Weather12°C (54°F)117 mm (4.6 inches)81%high
November Weather4°C (39°F)87 mm (3.4 inches)89%moderate
December Weather0°C (33°F)95 mm (3.8 inches)88%low

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