nomadseason

December Weather in Harvey, United States

Last updated: June 24, 2025

In December, the average temperature in Harvey, United States hovers around -3°C (26°F). Expect chilly extremes, with minimums plummeting to -21°C (-6°F) and occasional highs reaching 12°C (54°F). Precipitation is moderate, totaling 68 mm (2.7 in) over approximately 12 days, while the air remains damp with an average humidity of 90%. Enjoy the wintery atmosphere but remember to bundle up!

December Temperature in Harvey

In December in Harvey, the average temperature is -3°C (26°F), with maximums reaching 12°C (54°F) and minimums plummeting to -21°C (-6°F). It's essential to pack accordingly for your travels, as the weather can vary significantly from chilly to surprisingly mild.

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

The chart illustrates December temperature patterns in Harvey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harvey, December typically has an average temperature of -3°C (26°F), with highs reaching up to 12°C (54°F) and lows dropping to around -21°C (-6°F).
JanFebMarAprMayJunJulAugSepOctNovDec201928354757666559483426
Data source: Temperature data for Harvey generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Harvey

In Harvey in December, the precipitation amount is 68 mm (2.7 in) over the course of 12 days.

December Precipitation Trends in Harvey

The chart displays monthly precipitation patterns in Harvey, 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 Harvey, December typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4762599473977899991287968
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Harvey

In Harvey in December, humidity is 90%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that seeps through layers of clothing, making outdoor exploration feel arduous and uncomfortable as the cold, damp air grips your skin.

December Average Humidity in Harvey

This chart illustrates the average monthly humidity levels in Harvey, 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 Harvey is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%88%86%77%74%71%72%76%83%86%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Harvey

In Harvey 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 Harvey, you can visit Hourly UV Index in Harvey.

Maximum UV Index Levels in Harvey for December

The chart shows the monthly maximum UV Index (UVI) for Harvey 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 Harvey typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789987532
Data source: Harvey 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 Harvey Compares to Other Months

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

This table compares monthly weather conditions in Harvey, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)47 mm (1.8 inches)92%low
February Weather-7°C (19°F)62 mm (2.4 inches)92%moderate
March Weather-2°C (28°F)59 mm (2.3 inches)88%moderate
April Weather2°C (36°F)94 mm (3.7 inches)86%high
May Weather8°C (47°F)73 mm (2.9 inches)77%very high
June Weather14°C (57°F)97 mm (3.8 inches)74%very high
July Weather19°C (66°F)78 mm (3.1 inches)71%very high
August Weather18°C (65°F)99 mm (3.9 inches)72%very high
September Weather15°C (60°F)98 mm (3.9 inches)75%high
October Weather9°C (48°F)128 mm (5.0 inches)83%moderate
November Weather1°C (35°F)79 mm (3.1 inches)86%moderate
December Weather-3°C (26°F)68 mm (2.7 inches)90%low

Compare Harvey's Climate with Cities Worldwide