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December Weather in Denison, United States

Last updated: June 24, 2025

In December, the average temperature in Denison, United States hovers around 10°C (50°F). Expect a minimum drop to -6°C (22°F) and a maximum rise to 25°C (78°F). With precipitation measuring 69 mm (2.7 in) over about 7 days, humidity tends to be high at 87%, creating a truly unique climate experience!

December Temperature in Denison

In December in Denison, the average temperature is 10°C (50°F). Maximums can reach 25°C (78°F), while minimums can be as low as -6°C (22°F). This diverse range of temperatures makes Denison a great destination for travelers looking to experience varying climates and activities.

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

The chart illustrates December temperature patterns in Denison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Denison, December typically has an average temperature of 10°C (50°F), with highs reaching up to 25°C (78°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec454758637380848378665450
Data source: Temperature data for Denison 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 Denison

In Denison in December, the precipitation amount is 69 mm (2.7 in) over the course of 7 days.

December Precipitation Trends in Denison

The chart displays monthly precipitation patterns in Denison, 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 Denison, December typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec5995129130158109531021041655869
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Denison

In Denison in December humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.

December Average Humidity in Denison

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

In Denison 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 Denison for better planning.

Maximum UV Index Levels in Denison for December

The chart shows the monthly maximum UV Index (UVI) for Denison 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 Denison typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Denison 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 Denison Compares to Other Months

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

This table compares monthly weather conditions in Denison, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)59 mm (2.3 inches)80%moderate
February Weather8°C (47°F)95 mm (3.7 inches)79%high
March Weather14°C (58°F)129 mm (5.1 inches)78%very high
April Weather17°C (63°F)130 mm (5.1 inches)78%very high
May Weather23°C (73°F)158 mm (6.2 inches)81%extreme
June Weather27°C (81°F)109 mm (4.3 inches)78%extreme
July Weather29°C (84°F)53 mm (2.1 inches)73%extreme
August Weather28°C (83°F)102 mm (4.0 inches)66%extreme
September Weather25°C (78°F)104 mm (4.1 inches)65%very high
October Weather19°C (66°F)165 mm (6.5 inches)72%very high
November Weather12°C (55°F)58 mm (2.3 inches)82%high
December Weather10°C (50°F)69 mm (2.7 inches)87%moderate

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