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December Weather in Saint Maries, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Maries, United States hovers around -1°C (30°F). However, be prepared for extremes; temperatures can plummet to a minimum of -20°C (-4°F) or rise to a maximum of 15°C (59°F). Rainfall is also notable, with an average precipitation of 130 mm (5.1 in) spread over 17 days, and expect high levels of humidity at 90%.

December Temperature in Saint Maries

In December in Saint Maries, the average temperature is -1°C (30°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -20°C (-4°F). Travelers should prepare for a wide temperature range and dress in layers to stay comfortable during their visit.

December Weather in Saint Maries: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint Maries, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Maries, December typically has an average temperature of -1°C (30°F), with highs reaching up to 15°C (59°F) and lows dropping to around -20°C (-4°F).
JanFebMarAprMayJunJulAugSepOctNovDec302836445461706959453730
Data source: Temperature data for Saint Maries 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 Saint Maries

In Saint Maries in December, the total precipitation amount is 130 mm (5.1 in) over a span of 17 days.

December Precipitation Trends in Saint Maries

The chart displays monthly precipitation patterns in Saint Maries, 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 Saint Maries, December typically receives around 130 mm (5.1 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec111142102101874991846101137130
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint Maries

In Saint Maries in December, humidity is 90%. With an average temperature of -1°C (30°F), this humidity feels like a bone-chilling dampness that seeps into your clothes, making outdoor activities uncomfortable and travel quite challenging.

December Average Humidity in Saint Maries

This chart illustrates the average monthly humidity levels in Saint Maries, 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 Saint Maries is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%87%84%78%78%77%64%62%79%87%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint Maries

In Saint Maries 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 Saint Maries, you can visit Hourly UV Index in Saint Maries.

Maximum UV Index Levels in Saint Maries for December

The chart shows the monthly maximum UV Index (UVI) for Saint Maries 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 Saint Maries typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2467991097532
Data source: Saint Maries 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 Saint Maries Compares to Other Months

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

This table compares monthly weather conditions in Saint Maries, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)111 mm (4.4 inches)89%low
February Weather-2°C (28°F)142 mm (5.6 inches)89%moderate
March Weather2°C (37°F)101 mm (4.0 inches)87%high
April Weather6°C (44°F)100 mm (4.0 inches)84%high
May Weather12°C (54°F)87 mm (3.4 inches)77%very high
June Weather16°C (61°F)49 mm (1.9 inches)78%very high
July Weather21°C (71°F)9 mm (0.3 inches)77%very high
August Weather21°C (70°F)18 mm (0.7 inches)64%very high
September Weather15°C (59°F)46 mm (1.8 inches)62%high
October Weather7°C (45°F)101 mm (4.0 inches)79%moderate
November Weather3°C (37°F)137 mm (5.4 inches)87%moderate
December Weather-1°C (30°F)130 mm (5.1 inches)90%low

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