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December Weather in Dumas, United States

Last updated: June 24, 2025

In December, the average temperature in Dumas, United States hovers around 5°C (40°F). Temperatures can range from a chilly -12°C (11°F) to a pleasantly warm 24°C (76°F). Expect a precipitation amount of 14 mm (0.6 in) over about 2 days, and prepare for a humidity level that averages around 81%.

December Temperature in Dumas

In December in Dumas, the average temperature is 5°C (40°F). Maximums can reach 24°C (76°F), while minimums can drop as low as -12°C (11°F). Travelers should be prepared for a wide range of weather conditions during this time.

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

The chart illustrates December temperature patterns in Dumas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dumas, December typically has an average temperature of 5°C (40°F), with highs reaching up to 24°C (76°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec373950566777807872574740
Data source: Temperature data for Dumas 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 Dumas

In Dumas in December, the precipitation amount is 14 mm (0.6 in) over a period of 2 days.

December Precipitation Trends in Dumas

The chart displays monthly precipitation patterns in Dumas, 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 Dumas, December typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec161047377041375829561315
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Dumas

In Dumas in December humidity is 81%. With an average temperature of 5°C (40°F), this humidity feels like an uncomfortable chill in the air, making outdoor activities less enjoyable and prompting travelers to seek shelter more often.

December Average Humidity in Dumas

This chart illustrates the average monthly humidity levels in Dumas, 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 Dumas is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%76%64%70%78%81%82%78%72%73%81%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Dumas

In Dumas 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 Dumas for better planning.

Maximum UV Index Levels in Dumas for December

The chart shows the monthly maximum UV Index (UVI) for Dumas 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 Dumas typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468111112121110754
Data source: Dumas 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 Dumas Compares to Other Months

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

This table compares monthly weather conditions in Dumas, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)16 mm (0.6 inches)75%moderate
February Weather4°C (39°F)10 mm (0.4 inches)76%high
March Weather10°C (50°F)47 mm (1.9 inches)64%very high
April Weather14°C (57°F)37 mm (1.4 inches)70%extreme
May Weather19°C (67°F)70 mm (2.7 inches)78%extreme
June Weather25°C (77°F)41 mm (1.6 inches)81%extreme
July Weather27°C (80°F)37 mm (1.5 inches)82%extreme
August Weather26°C (78°F)58 mm (2.3 inches)78%extreme
September Weather22°C (72°F)29 mm (1.1 inches)72%very high
October Weather14°C (58°F)56 mm (2.2 inches)73%high
November Weather9°C (48°F)12 mm (0.5 inches)80%moderate
December Weather5°C (40°F)14 mm (0.6 inches)81%moderate

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