March Weather in Saint Clair, United States

Last updated: June 24, 2025

In Saint Clair, United States, the average temperature in March hovers around 1°C (34°F). Be prepared for a wide range of temperatures, as minimums can plunge to -27°C (-16°F) while maximums can reach a comfortable 24°C (75°F). Expect about 68 mm (2.7 in) of precipitation spread over 7 days, and with an average humidity of 80%, it's a month where layering and umbrellas might be your best friends!

March Temperature in Saint Clair

In March in Saint Clair, the average temperature is 1°C (34°F). The maximum can reach 24°C (75°F) while the minimum can drop as low as -27°C (-16°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

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

The chart illustrates March 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, March typically has an average temperature of 1°C (34°F), with highs reaching up to 24°C (75°F) and lows dropping to around -27°C (-16°F).

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

March Precipitation in Saint Clair

In Saint Clair in March, the precipitation amount is 68 mm (2.7 in) over the course of 7 days.

March Precipitation Trends in Saint Clair

The chart displays monthly precipitation patterns in Saint Clair, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Saint Clair, March typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Saint Clair

In Saint Clair in March, humidity is 80%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill that seeps through your layers, making outdoor activities uncomfortable and potentially discouraging for travelers.

March Average Humidity in Saint Clair

This chart illustrates the average monthly humidity levels in Saint Clair, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Saint Clair is approximately 80%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Saint Clair

In Saint Clair in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Saint Clair.

Maximum UV Index Levels in Saint Clair for March

The chart shows the monthly maximum UV Index (UVI) for Saint Clair in March, 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 March, the maximum UV index in Saint Clair typically reaches 5, which falls under the moderate exposure category.

Data source: Saint Clair March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	34 mm (1.3 inches)	82%	moderate
February Weather	-9°C (17°F)	41 mm (1.6 inches)	84%	moderate
March Weather	1°C (34°F)	68 mm (2.7 inches)	80%	moderate
April Weather	7°C (45°F)	91 mm (3.6 inches)	81%	very high
May Weather	15°C (60°F)	140 mm (5.5 inches)	74%	very high
June Weather	22°C (72°F)	118 mm (4.7 inches)	80%	very high
July Weather	23°C (74°F)	103 mm (4.1 inches)	80%	very high
August Weather	21°C (71°F)	119 mm (4.7 inches)	77%	very high
September Weather	18°C (65°F)	137 mm (5.4 inches)	75%	very high
October Weather	9°C (49°F)	93 mm (3.7 inches)	80%	moderate
November Weather	1°C (35°F)	36 mm (1.4 inches)	87%	moderate
December Weather	-4°C (25°F)	44 mm (1.7 inches)	83%	moderate