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December Weather in Delta, United States

Last updated: June 24, 2025

In December, the average temperature in Delta, United States hovers around 0°C (32°F), with extremes ranging from a brisk -16°C (3°F) to a mild 18°C (65°F). Prepare for about 26 mm (1.0 in) of precipitation over 5 days, and don't forget to brace yourself for an average humidity of 83%. Enjoy the unique climate!

December Temperature in Delta

In December in Delta, the average temperature is 0°C (32°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -16°C (3°F). Be prepared for a range of temperatures to make the most of your travel experience.

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

The chart illustrates December temperature patterns in Delta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delta, December typically has an average temperature of 0°C (32°F), with highs reaching up to 18°C (65°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec323746546377848272524332
Data source: Temperature data for Delta 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 Delta

In Delta in December, the precipitation amount is 26 mm (1.0 in) over the course of 5 days.

December Precipitation Trends in Delta

The chart displays monthly precipitation patterns in Delta, 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 Delta, December typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec24284024244679261926
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Delta

In Delta in December, humidity is 83%. With an average temperature of 0°C (32°F), this humidity feels like traveling through a thick mist, making every step heavy and the cold pierce even deeper, causing you to constantly seek shelter or warm beverages to counteract the damp chill.

December Average Humidity in Delta

This chart illustrates the average monthly humidity levels in Delta, 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 Delta is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%76%67%51%44%37%32%43%63%80%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Delta

In Delta in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Delta, you can check the information here.

Maximum UV Index Levels in Delta for December

The chart shows the monthly maximum UV Index (UVI) for Delta 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 Delta typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110753
Data source: Delta 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 Delta Compares to Other Months

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

This table compares monthly weather conditions in Delta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)24 mm (0.9 inches)82%moderate
February Weather3°C (37°F)28 mm (1.1 inches)84%high
March Weather8°C (46°F)40 mm (1.6 inches)76%very high
April Weather12°C (54°F)24 mm (0.9 inches)67%very high
May Weather17°C (63°F)24 mm (1.0 inches)51%extreme
June Weather25°C (77°F)4 mm (0.2 inches)44%extreme
July Weather29°C (85°F)6 mm (0.2 inches)36%extreme
August Weather28°C (82°F)7 mm (0.3 inches)32%extreme
September Weather22°C (72°F)9 mm (0.4 inches)43%very high
October Weather11°C (53°F)26 mm (1.0 inches)63%high
November Weather6°C (44°F)19 mm (0.8 inches)80%moderate
December Weather0°C (32°F)26 mm (1.0 inches)83%moderate

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