nomadseason

December Weather in Big Delta, United States

Last updated: June 24, 2025

In December, the average temperature in Big Delta, United States hovers around -15°C (6°F). Be prepared for some extreme cold, as temperatures can plummet to a minimum of -37°C (-34°F), with a maximum reaching up to 3°C (37°F). Expect 33 mm (1.3 in) of precipitation spread over 6 days, and an astonishing average humidity of 98%. Bundle up and stay warm!

December Temperature in Big Delta

In December in Big Delta, the average temperature is -15°C (6°F). Maximums can reach 3°C (37°F), while minimums can plummet to -37°C (-34°F). It's essential to be well-prepared for extreme cold if you plan to travel during this time.

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

The chart illustrates December temperature patterns in Big Delta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Big Delta, December typically has an average temperature of -15°C (6°F), with highs reaching up to 3°C (37°F) and lows dropping to around -37°C (-34°F).
JanFebMarAprMayJunJulAugSepOctNovDec-23133249596155463095
Data source: Temperature data for Big Delta generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Big Delta

In Big Delta, in December, the precipitation amount is 33 mm (1.3 in) over the course of 6 days.

December Precipitation Trends in Big Delta

The chart displays monthly precipitation patterns in Big 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 Big Delta, December typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec12212118451159411148412833
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Big Delta

In Big Delta in December, humidity is 98%. With an average temperature of -15°C (6°F), this humidity feels like an unyielding chill that seeps into your bones, making every breath slightly heavier and each step a test of endurance for any traveler unprepared for such an extreme combination of cold and dampness.

December Average Humidity in Big Delta

This chart illustrates the average monthly humidity levels in Big 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 Big Delta is approximately 98%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%93%89%86%79%80%85%88%90%98%100%98%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Big Delta

In Big Delta in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Big Delta.

Maximum UV Index Levels in Big Delta for December

The chart shows the monthly maximum UV Index (UVI) for Big 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 Big Delta typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112455553211
Data source: Big 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 Big Delta Compares to Other Months

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

This table compares monthly weather conditions in Big Delta, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-19°C (-1°F)12 mm (0.5 inches)96%low
February Weather-16°C (3°F)21 mm (0.8 inches)93%low
March Weather-10°C (14°F)21 mm (0.8 inches)89%low
April Weather0°C (33°F)18 mm (0.7 inches)86%moderate
May Weather10°C (49°F)45 mm (1.8 inches)79%moderate
June Weather15°C (59°F)115 mm (4.5 inches)80%moderate
July Weather16°C (62°F)93 mm (3.7 inches)85%moderate
August Weather13°C (55°F)111 mm (4.4 inches)88%moderate
September Weather8°C (46°F)48 mm (1.9 inches)90%moderate
October Weather-1°C (31°F)41 mm (1.6 inches)97%low
November Weather-13°C (10°F)28 mm (1.1 inches)100%low
December Weather-15°C (6°F)33 mm (1.3 inches)98%low

Compare Big Delta's Climate with Cities Worldwide