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December Weather in Hawthorne, United States

Last updated: June 24, 2025

In December, the average temperature in Hawthorne, United States hovers around -1°C (31°F). Expect temperatures to vary, with a minimum of -20°C (-3°F) and a maximum of 16°C (62°F). The month sees an average precipitation of 29 mm (1.1 in) spread over 6 days, contributing to an average humidity level of 82%. Be prepared for a chill in the air, but also an opportunity to enjoy the beauty of winter!

December Temperature in Hawthorne

In December in Hawthorne, the average temperature is -1°C (31°F), with maximums reaching 16°C (62°F) and minimums dropping as low as -20°C (-3°F). It's essential to pack warm clothing and be prepared for a wide range of temperatures while exploring.

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

The chart illustrates December temperature patterns in Hawthorne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hawthorne, December typically has an average temperature of -1°C (31°F), with highs reaching up to 16°C (62°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec313241515871797768534331
Data source: Temperature data for Hawthorne 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 Hawthorne

In Hawthorne in December, the precipitation amount is 29 mm (1.1 in) over the course of 6 days.

December Precipitation Trends in Hawthorne

The chart displays monthly precipitation patterns in Hawthorne, 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 Hawthorne, December typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec343134203471169151729
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hawthorne

In Hawthorne in December humidity is 82%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, biting chill that seeps through layers of clothing, making outdoor activities uncomfortable and urging travelers to seek shelter or warm beverages to combat the cold.

December Average Humidity in Hawthorne

This chart illustrates the average monthly humidity levels in Hawthorne, 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 Hawthorne is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%87%84%78%64%56%44%34%41%60%81%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hawthorne

In Hawthorne 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 Hawthorne for better planning.

Maximum UV Index Levels in Hawthorne for December

The chart shows the monthly maximum UV Index (UVI) for Hawthorne 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 Hawthorne typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101212121110754
Data source: Hawthorne 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 Hawthorne Compares to Other Months

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

This table compares monthly weather conditions in Hawthorne, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (31°F)34 mm (1.4 inches)85%moderate
February Weather0°C (33°F)31 mm (1.2 inches)87%high
March Weather5°C (41°F)34 mm (1.3 inches)84%very high
April Weather11°C (51°F)20 mm (0.8 inches)78%very high
May Weather15°C (59°F)34 mm (1.3 inches)64%extreme
June Weather22°C (71°F)7 mm (0.3 inches)56%extreme
July Weather26°C (79°F)10 mm (0.4 inches)44%extreme
August Weather25°C (78°F)6 mm (0.2 inches)34%extreme
September Weather20°C (68°F)9 mm (0.4 inches)41%very high
October Weather11°C (53°F)15 mm (0.6 inches)60%high
November Weather6°C (44°F)17 mm (0.7 inches)81%moderate
December Weather-1°C (31°F)29 mm (1.1 inches)82%moderate

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