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December Weather in Harrison, United States

Last updated: June 24, 2025

In December, the average temperature in Harrison, United States is a brisk 6°C (44°F). During this time, temperatures can dip as low as -10°C (15°F) and soar to a pleasant 26°C (79°F). Expect about 79 mm (3.1 in) of precipitation spread over 7 days, with the average humidity reaching a humid 87%.

December Temperature in Harrison

In December in Harrison, the average temperature is 6°C (44°F). Maximums can reach 26°C (79°F), while minimums can drop as low as -10°C (15°F). It's advisable to prepare for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Harrison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrison, December typically has an average temperature of 6°C (44°F), with highs reaching up to 26°C (79°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec384151576775797773614843
Data source: Temperature data for Harrison 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 Harrison

In Harrison in December, the total precipitation amount is 79 mm (3.1 in) distributed over a period of 7 days.

December Precipitation Trends in Harrison

The chart displays monthly precipitation patterns in Harrison, 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 Harrison, December typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec751001361501769481133551127379
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Harrison

In Harrison in December humidity is 87%. With an average temperature of 6°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable without proper layers and preparation.

December Average Humidity in Harrison

This chart illustrates the average monthly humidity levels in Harrison, 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 Harrison 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 Harrison

In Harrison 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 Harrison, you can check the information here.

Maximum UV Index Levels in Harrison for December

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

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

This table compares monthly weather conditions in Harrison, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)75 mm (3.0 inches)81%moderate
February Weather5°C (41°F)100 mm (3.9 inches)78%high
March Weather11°C (51°F)136 mm (5.4 inches)76%very high
April Weather14°C (57°F)150 mm (5.9 inches)78%very high
May Weather20°C (67°F)176 mm (6.9 inches)83%extreme
June Weather24°C (76°F)94 mm (3.7 inches)83%extreme
July Weather26°C (80°F)81 mm (3.2 inches)78%extreme
August Weather25°C (77°F)133 mm (5.2 inches)68%very high
September Weather23°C (74°F)55 mm (2.2 inches)64%very high
October Weather16°C (61°F)112 mm (4.4 inches)70%high
November Weather9°C (48°F)73 mm (2.9 inches)83%moderate
December Weather6°C (44°F)79 mm (3.1 inches)87%moderate

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