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December Weather in Saint Francis, United States

Last updated: June 24, 2025

In Saint Francis, United States, the average temperature in December hovers around -8°C (18°F). While the mercury can dip as low as -26°C (-14°F), it can occasionally climb to a maximum of 13°C (56°F). Expect about 84 mm (3.3 in) of precipitation over 11 days, contributing to an average humidity level of 90%.

December Temperature in Saint Francis

In December in Saint Francis, the average temperature is -8°C (18°F). The maximum can reach 13°C (56°F), and the minimum can be as low as -26°C (-14°F). When traveling during this month, be prepared for significant temperature fluctuations and dress accordingly to stay comfortable.

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

The chart illustrates December temperature patterns in Saint Francis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Francis, December typically has an average temperature of -8°C (18°F), with highs reaching up to 13°C (56°F) and lows dropping to around -26°C (-14°F).
JanFebMarAprMayJunJulAugSepOctNovDec131523365060666455443018
Data source: Temperature data for Saint Francis 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 Francis

In Saint Francis, in December, the precipitation amount is 84 mm (3.3 in) during a period of 11 days.

December Precipitation Trends in Saint Francis

The chart displays monthly precipitation patterns in Saint Francis, 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 Francis, December typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec867081106919584767410910584
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint Francis

In Saint Francis in December, humidity is 90%. With an average temperature of -8°C (18°F), this humidity feels like an icy fog wrapping around you, making every breath sharp and crisp, and requiring careful planning for travel to avoid the chill while navigating the damp air.

December Average Humidity in Saint Francis

This chart illustrates the average monthly humidity levels in Saint Francis, 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 Francis is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%90%87%82%77%82%83%85%87%88%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint Francis

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

Maximum UV Index Levels in Saint Francis for December

The chart shows the monthly maximum UV Index (UVI) for Saint Francis 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 Francis typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235889887532
Data source: Saint Francis 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 Francis Compares to Other Months

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

This table compares monthly weather conditions in Saint Francis, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)85 mm (3.4 inches)93%low
February Weather-10°C (15°F)70 mm (2.8 inches)92%moderate
March Weather-5°C (24°F)81 mm (3.2 inches)90%moderate
April Weather2°C (36°F)106 mm (4.2 inches)87%very high
May Weather10°C (51°F)91 mm (3.6 inches)82%very high
June Weather15°C (60°F)95 mm (3.7 inches)77%very high
July Weather19°C (66°F)84 mm (3.3 inches)81%very high
August Weather18°C (64°F)76 mm (3.0 inches)83%very high
September Weather13°C (56°F)74 mm (2.9 inches)85%high
October Weather7°C (44°F)109 mm (4.3 inches)87%moderate
November Weather-1°C (30°F)105 mm (4.1 inches)87%moderate
December Weather-8°C (18°F)84 mm (3.3 inches)90%low

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