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December Weather in St. Paul, Canada

Last updated: June 18, 2025

In December, the average temperature in St. Paul, Canada is a chilly -11°C (13°F). Expect extremes with a minimum plunging to -41°C (-42°F) and a maximum of 7°C (45°F). During this month, precipitation typically totals around 18 mm (0.7 in) over 5 days, accompanied by a high average humidity of 92%, making it a notably crisp time of year.

December Temperature in St. Paul

In December in St. Paul, the average temperature is -11°C (13°F). The maximum can reach 7°C (45°F) and the minimum can be as low as -41°C (-42°F). Travelers should be prepared for extreme cold and varying conditions when visiting during this time.

December Weather in St. Paul: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in St. Paul, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St. Paul, December typically has an average temperature of -11°C (13°F), with highs reaching up to 7°C (45°F) and lows dropping to around -41°C (-42°F).
JanFebMarAprMayJunJulAugSepOctNovDec9521345259636050362113
Data source: Temperature data for St. Paul 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 St. Paul

In St. Paul in December, the precipitation amount is 18 mm (0.7 in) spread over a duration of 5 days.

December Precipitation Trends in St. Paul

The chart displays monthly precipitation patterns in St. Paul, 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 St. Paul, December typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec1716243346114975640303018
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in St. Paul

In St. Paul in December, humidity is 92%. With an average temperature of -11°C (13°F), this humidity feels like a biting chill that seeps into your bones, making it uncomfortable for traveling and turning every stroll outdoors into a test of endurance against the cold and damp air.

December Average Humidity in St. Paul

This chart illustrates the average monthly humidity levels in St. Paul, 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 St. Paul is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%92%88%80%73%71%80%78%73%78%82%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in St. Paul

In St. Paul 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 St. Paul.

Maximum UV Index Levels in St. Paul for December

The chart shows the monthly maximum UV Index (UVI) for St. Paul 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 St. Paul typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec134578876321
Data source: St. Paul 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 St. Paul Compares to Other Months

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

This table compares monthly weather conditions in St. Paul, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-13°C (9°F)17 mm (0.7 inches)89%low
February Weather-15°C (5°F)16 mm (0.6 inches)92%moderate
March Weather-6°C (21°F)24 mm (0.9 inches)88%moderate
April Weather1°C (34°F)33 mm (1.3 inches)80%moderate
May Weather11°C (52°F)46 mm (1.8 inches)73%high
June Weather15°C (60°F)114 mm (4.5 inches)71%very high
July Weather17°C (63°F)97 mm (3.8 inches)80%very high
August Weather16°C (61°F)56 mm (2.2 inches)78%high
September Weather10°C (50°F)40 mm (1.6 inches)73%high
October Weather2°C (36°F)30 mm (1.2 inches)78%moderate
November Weather-6°C (21°F)29 mm (1.2 inches)82%low
December Weather-11°C (13°F)18 mm (0.7 inches)92%low

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