March Weather in Waterloo, United States

Last updated: June 24, 2025

In March, the average temperature in Waterloo, United States hovers around 9°C (48°F), creating a brisk atmosphere for outdoor activities. Temperatures can swing dramatically, with a minimum of -16°C (4°F) and a maximum of 28°C (83°F), so dressing in layers is advisable. Expect precipitation of 136 mm (5.4 in) over approximately 13 days, contributing to an average humidity of 80% that adds to the chill in the air. Stay prepared and enjoy the unique climate this season brings!

March Temperature in Waterloo

In March in Waterloo, the average temperature is 9°C (48°F), with maximums that can reach 28°C (83°F) and minimums that can drop as low as -16°C (4°F). This variation makes it essential for travelers to pack appropriately to enjoy both the warmer and cooler moments of their visit.

March Weather in Waterloo: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Waterloo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterloo, March typically has an average temperature of 9°C (48°F), with highs reaching up to 28°C (83°F) and lows dropping to around -16°C (4°F).

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

March Precipitation in Waterloo

In Waterloo in March, the precipitation amount reaches 136 mm (5.4 in) over a span of 13 days.

March Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, 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 Waterloo, March typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 13 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 Waterloo

In Waterloo in March humidity is 80%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel quite uncomfortable.

March Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, 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 Waterloo 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 Waterloo

In Waterloo in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Waterloo.

Maximum UV Index Levels in Waterloo for March

The chart shows the monthly maximum UV Index (UVI) for Waterloo 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 Waterloo typically reaches 7, which falls under the high exposure category.

Data source: Waterloo 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 Waterloo Compares to Other Months

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

This table compares monthly weather conditions in Waterloo, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	79 mm (3.1 inches)	82%	moderate
February Weather	3°C (37°F)	87 mm (3.4 inches)	80%	moderate
March Weather	9°C (48°F)	136 mm (5.4 inches)	80%	high
April Weather	13°C (56°F)	142 mm (5.6 inches)	80%	very high
May Weather	20°C (68°F)	149 mm (5.9 inches)	82%	very high
June Weather	25°C (77°F)	87 mm (3.4 inches)	83%	extreme
July Weather	27°C (80°F)	89 mm (3.5 inches)	81%	very high
August Weather	25°C (77°F)	123 mm (4.8 inches)	80%	very high
September Weather	22°C (73°F)	66 mm (2.6 inches)	76%	very high
October Weather	15°C (60°F)	109 mm (4.3 inches)	76%	high
November Weather	7°C (45°F)	75 mm (2.9 inches)	85%	moderate
December Weather	4°C (40°F)	68 mm (2.7 inches)	86%	moderate