nomadseason

December Weather in Saint Joseph, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Joseph, United States hovers around 8°C (47°F). While you might experience a chilly minimum of -8°C (18°F), it’s possible to enjoy warmer days with a maximum of 23°C (74°F). Be prepared for some rainfall too, as 158 mm (6.2 in) of precipitation is expected over approximately 11 days, accompanied by a high average humidity of 88%.

December Temperature in Saint Joseph

In December in Saint Joseph, the average temperature is 8°C (47°F). The maximum can reach 23°C (74°F), while the minimum can drop to as low as -8°C (18°F). Be prepared for a wide range of temperatures when traveling to Saint Joseph during this month.

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

The chart illustrates December temperature patterns in Saint Joseph, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Joseph, December typically has an average temperature of 8°C (47°F), with highs reaching up to 23°C (74°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec434755617177807975645047
Data source: Temperature data for Saint Joseph 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 Saint Joseph

In Saint Joseph in December, the total precipitation amount is 158 mm (6.2 in) spread over the course of 11 days.

December Precipitation Trends in Saint Joseph

The chart displays monthly precipitation patterns in Saint Joseph, 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 Joseph, December typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec12719318916311711811711010410976158
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Saint Joseph

In Saint Joseph in December, humidity is 88%. With an average temperature of 8°C (47°F), this humidity feels like a thick, damp blanket wrapping around you, making even short walks feel heavy and uninviting for travel.

December Average Humidity in Saint Joseph

This chart illustrates the average monthly humidity levels in Saint Joseph, 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 Joseph is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%81%83%83%80%74%70%73%85%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint Joseph

In Saint Joseph in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Saint Joseph, you can check the information here.

Maximum UV Index Levels in Saint Joseph for December

The chart shows the monthly maximum UV Index (UVI) for Saint Joseph 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 Joseph typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Saint Joseph 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 Joseph Compares to Other Months

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

This table compares monthly weather conditions in Saint Joseph, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)127 mm (5.0 inches)86%moderate
February Weather9°C (48°F)193 mm (7.6 inches)85%high
March Weather13°C (55°F)189 mm (7.4 inches)84%very high
April Weather16°C (61°F)163 mm (6.4 inches)81%very high
May Weather21°C (71°F)117 mm (4.6 inches)83%extreme
June Weather25°C (77°F)118 mm (4.6 inches)83%extreme
July Weather27°C (80°F)117 mm (4.6 inches)80%extreme
August Weather26°C (79°F)110 mm (4.3 inches)73%very high
September Weather24°C (75°F)104 mm (4.1 inches)70%very high
October Weather18°C (65°F)109 mm (4.3 inches)73%high
November Weather10°C (50°F)76 mm (3.0 inches)85%moderate
December Weather8°C (47°F)158 mm (6.2 inches)88%moderate

Compare Saint Joseph's Climate with Cities Worldwide