January Weather in Saint Clair, United States

Last updated: June 24, 2025

In January, the average temperature in Saint Clair, United States hovers around 1°C (34°F), with a minimum dipping to -20°C (-3°F) and a maximum reaching 20°C (68°F). Expect about 76 mm (3.0 in) of precipitation spread over 8 days, contributing to the average humidity of 82%. Stay prepared for a chilly, damp month!

January Temperature in Saint Clair

In January in Saint Clair, the average temperature is 1°C (34°F). Maximums can reach 20°C (68°F), while minimums can drop as low as -20°C (-3°F). Be prepared for a wide range of temperatures when traveling during this time.

January Weather in Saint Clair: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Saint Clair, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Clair, January typically has an average temperature of 1°C (34°F), with highs reaching up to 20°C (68°F) and lows dropping to around -20°C (-3°F).

Data source: Temperature data for Saint Clair generated using information from the Copernicus Climate Change Service.

January Precipitation in Saint Clair

In Saint Clair in January, the precipitation amount is 76 mm (3.0 in) spread over a duration of 8 days.

January Precipitation Trends in Saint Clair

The chart displays monthly precipitation patterns in Saint Clair, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Saint Clair, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Saint Clair

In Saint Clair in January humidity is 82%. With an average temperature of 1°C (34°F), this humidity feels like walking through a thick fog, making it challenging to stay warm and comfortable while traveling.

January Average Humidity in Saint Clair

This chart illustrates the average monthly humidity levels in Saint Clair, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Saint Clair is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Saint Clair

In Saint Clair in January, 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 Clair, you can check the information here.

Maximum UV Index Levels in Saint Clair for January

The chart shows the monthly maximum UV Index (UVI) for Saint Clair in January, 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 January, the maximum UV index in Saint Clair typically reaches 3, which falls under the moderate exposure category.

Data source: Saint Clair January 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 January Weather in Saint Clair Compares to Other Months

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

This table compares monthly weather conditions in Saint Clair, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	76 mm (3.0 inches)	82%	moderate
February Weather	2°C (37°F)	84 mm (3.3 inches)	80%	moderate
March Weather	9°C (48°F)	126 mm (5.0 inches)	80%	high
April Weather	13°C (55°F)	130 mm (5.1 inches)	80%	very high
May Weather	19°C (66°F)	154 mm (6.1 inches)	82%	very high
June Weather	24°C (76°F)	87 mm (3.4 inches)	83%	extreme
July Weather	26°C (79°F)	98 mm (3.8 inches)	81%	extreme
August Weather	24°C (76°F)	131 mm (5.1 inches)	80%	very high
September Weather	22°C (72°F)	59 mm (2.3 inches)	76%	very high
October Weather	15°C (59°F)	108 mm (4.3 inches)	76%	high
November Weather	7°C (45°F)	69 mm (2.7 inches)	85%	moderate
December Weather	4°C (40°F)	58 mm (2.3 inches)	86%	moderate