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December Weather in Atwater, United States

Last updated: June 24, 2025

In December, the average temperature in Atwater, United States is a brisk -6°C (22°F), with extremes ranging from a chilly -26°C (-15°F) to a milder 11°C (52°F). Residents can expect 41 mm (1.6 in) of precipitation spread over 6 days, contributing to an average humidity of 84%. Bundle up and enjoy the unique weather this month brings!

December Temperature in Atwater

In December in Atwater, the average temperature is -6°C (22°F). The maximum can reach 11°C (52°F), and the minimum can be as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures and bring appropriate clothing to stay warm.

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

The chart illustrates December temperature patterns in Atwater, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atwater, December typically has an average temperature of -6°C (22°F), with highs reaching up to 11°C (52°F) and lows dropping to around -26°C (-15°F).
JanFebMarAprMayJunJulAugSepOctNovDec141431415771737063473222
Data source: Temperature data for Atwater 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 Atwater

In Atwater in December, the precipitation amount is 41 mm (1.6 in) over the course of 6 days.

December Precipitation Trends in Atwater

The chart displays monthly precipitation patterns in Atwater, 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 Atwater, December typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec1922527710084961381141002841
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Atwater

In Atwater in December humidity is 84%. With an average temperature of -6°C (22°F), this humidity feels like an unpleasant chill that seeps into your bones, making travel feel much more uncomfortable and harsh than the temperature alone suggests.

December Average Humidity in Atwater

This chart illustrates the average monthly humidity levels in Atwater, 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 Atwater is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%90%85%84%78%80%81%81%81%84%88%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Atwater

In Atwater in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Atwater, you can visit Hourly UV Index in Atwater.

Maximum UV Index Levels in Atwater for December

The chart shows the monthly maximum UV Index (UVI) for Atwater 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 Atwater typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3557910997532
Data source: Atwater 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 Atwater Compares to Other Months

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

This table compares monthly weather conditions in Atwater, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)19 mm (0.8 inches)87%moderate
February Weather-10°C (15°F)22 mm (0.9 inches)90%moderate
March Weather-1°C (31°F)51 mm (2.0 inches)85%moderate
April Weather5°C (41°F)77 mm (3.0 inches)84%high
May Weather14°C (58°F)100 mm (3.9 inches)78%very high
June Weather21°C (71°F)84 mm (3.3 inches)80%very high
July Weather23°C (74°F)96 mm (3.8 inches)81%very high
August Weather21°C (70°F)138 mm (5.4 inches)81%very high
September Weather17°C (63°F)114 mm (4.5 inches)81%high
October Weather8°C (47°F)100 mm (3.9 inches)84%moderate
November Weather0°C (32°F)28 mm (1.1 inches)88%moderate
December Weather-6°C (22°F)41 mm (1.6 inches)84%low

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