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December Weather in Harker Heights, United States

Last updated: June 24, 2025

In December, the average temperature in Harker Heights, United States hovers around 12°C (54°F), with a comfortable range between a minimum of -3°C (27°F) and a maximum of 29°C (84°F). Expect around 55 mm (2.1 in) of precipitation over approximately 6 days, and be prepared for a notably high average humidity of 87%.

December Temperature in Harker Heights

In December in Harker Heights, the average temperature is 12°C (54°F). Maximum temperatures can reach 29°C (84°F), while minimum temperatures can drop as low as -3°C (27°F). Be prepared for a wide range of weather conditions when traveling during this time.

December Weather in Harker Heights: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Harker Heights, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harker Heights, December typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (84°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec505263677682868680705954
Data source: Temperature data for Harker Heights 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 Harker Heights

In Harker Heights in December, the total precipitation amount is 55 mm (2.1 in) spread over 6 days.

December Precipitation Trends in Harker Heights

The chart displays monthly precipitation patterns in Harker Heights, 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 Harker Heights, December typically receives around 55 mm (2.1 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec51637484177705992871143955
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Harker Heights

In Harker Heights in December humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

December Average Humidity in Harker Heights

This chart illustrates the average monthly humidity levels in Harker Heights, 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 Harker Heights is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%77%78%82%78%69%63%66%73%84%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Harker Heights

In Harker Heights 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 Harker Heights for better planning.

Maximum UV Index Levels in Harker Heights for December

The chart shows the monthly maximum UV Index (UVI) for Harker Heights 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 Harker Heights typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101112121111864
Data source: Harker Heights 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 Harker Heights Compares to Other Months

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

This table compares monthly weather conditions in Harker Heights, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)51 mm (2.0 inches)78%moderate
February Weather11°C (52°F)63 mm (2.5 inches)78%high
March Weather17°C (63°F)74 mm (2.9 inches)77%very high
April Weather20°C (68°F)84 mm (3.3 inches)78%very high
May Weather24°C (76°F)177 mm (7.0 inches)82%extreme
June Weather28°C (82°F)70 mm (2.8 inches)78%extreme
July Weather30°C (86°F)59 mm (2.3 inches)69%extreme
August Weather30°C (86°F)91 mm (3.6 inches)63%extreme
September Weather26°C (80°F)87 mm (3.4 inches)66%extreme
October Weather21°C (70°F)113 mm (4.5 inches)73%very high
November Weather15°C (59°F)39 mm (1.5 inches)84%high
December Weather12°C (54°F)55 mm (2.1 inches)87%moderate

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