March Weather in Waterloo, United States

Last updated: June 24, 2025

In March, the average temperature in Waterloo, United States hovers around 3°C (37°F). Expect a minimum of -24°C (-10°F) and a maximum of 22°C (72°F), showcasing the region's diverse climate. During this month, precipitation amounts to 73 mm (2.9 in) over approximately 8 days, while the average humidity remains high at 84%, creating a crisp yet damp atmosphere.

March Temperature in Waterloo

In March in Waterloo, the average temperature is 3°C (37°F), with maximums reaching up to 22°C (72°F) and minimums dropping as low as -24°C (-10°F). This wide range of temperatures means travelers should be prepared for both chilly and mild conditions, making versatile clothing a must.

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 3°C (37°F), with highs reaching up to 22°C (72°F) and lows dropping to around -24°C (-10°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 is 73 mm (2.9 in) over a span of 8 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 73 mm (2.9 inches) of precipitation spread over approximately 8 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 84%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions brisk and invigorating, yet requiring extra layers to stay comfortable.

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 84%, 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 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Waterloo, you can refer to this 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 6, 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	-7°C (20°F)	42 mm (1.6 inches)	84%	moderate
February Weather	-6°C (21°F)	52 mm (2.0 inches)	85%	moderate
March Weather	3°C (37°F)	73 mm (2.9 inches)	84%	high
April Weather	8°C (47°F)	78 mm (3.1 inches)	83%	very high
May Weather	16°C (61°F)	174 mm (6.8 inches)	75%	very high
June Weather	22°C (73°F)	144 mm (5.7 inches)	79%	extreme
July Weather	24°C (75°F)	107 mm (4.2 inches)	75%	very high
August Weather	22°C (71°F)	94 mm (3.7 inches)	69%	very high
September Weather	19°C (66°F)	124 mm (4.9 inches)	74%	very high
October Weather	11°C (51°F)	138 mm (5.5 inches)	79%	moderate
November Weather	2°C (37°F)	49 mm (1.9 inches)	88%	moderate
December Weather	-2°C (29°F)	36 mm (1.4 inches)	82%	moderate