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December Weather in Forney, United States

Last updated: June 24, 2025

In December, the average temperature in Forney, United States hovers around 11°C (52°F). Expect temperatures to range from a chilly -5°C (23°F) to a pleasant 28°C (82°F). With an average precipitation amount of 74 mm (2.9 in) spread over 7 days, and a high humidity level of 87%, be prepared for some damp days.

December Temperature in Forney

In December in Forney, the average temperature is 11°C (52°F), with maximums reaching up to 28°C (82°F) and minimums dipping as low as -5°C (23°F). It's essential to pack for a variety of weather conditions while traveling during this month.

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

The chart illustrates December temperature patterns in Forney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forney, December typically has an average temperature of 11°C (52°F), with highs reaching up to 28°C (82°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec474960657481858479685752
Data source: Temperature data for Forney 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 Forney

In Forney in December, the precipitation amount is 74 mm (2.9 in) over a period of 7 days.

December Precipitation Trends in Forney

The chart displays monthly precipitation patterns in Forney, 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 Forney, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec65111117138181975697861445574
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Forney

In Forney in December, humidity is 87%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make your clothes cling uncomfortably, leaving you feeling slightly weighed down while exploring the area.

December Average Humidity in Forney

This chart illustrates the average monthly humidity levels in Forney, 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 Forney is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Forney

In Forney 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 Forney for better planning.

Maximum UV Index Levels in Forney for December

The chart shows the monthly maximum UV Index (UVI) for Forney 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 Forney typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
Data source: Forney 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 Forney Compares to Other Months

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

This table compares monthly weather conditions in Forney, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)65 mm (2.6 inches)80%moderate
February Weather10°C (50°F)111 mm (4.4 inches)79%high
March Weather16°C (61°F)117 mm (4.6 inches)78%very high
April Weather18°C (65°F)138 mm (5.4 inches)78%very high
May Weather23°C (75°F)181 mm (7.1 inches)81%extreme
June Weather27°C (82°F)97 mm (3.8 inches)78%extreme
July Weather29°C (85°F)56 mm (2.2 inches)73%extreme
August Weather29°C (85°F)97 mm (3.8 inches)66%extreme
September Weather26°C (80°F)86 mm (3.4 inches)65%very high
October Weather20°C (68°F)144 mm (5.7 inches)72%very high
November Weather14°C (57°F)55 mm (2.2 inches)82%high
December Weather11°C (52°F)74 mm (2.9 inches)87%moderate

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