March Weather in Winnetka, United States

Last updated: June 24, 2025

In Winnetka, United States, the average temperature in March hovers around 3°C (38°F), with a minimum dipping to -19°C (-2°F) and a maximum reaching 22°C (72°F). Expect 82 mm (3.2 in) of precipitation over 11 days, contributing to a high average humidity of 84%. Prepare accordingly for a mix of chilly and mild conditions!

March Temperature in Winnetka

In March in Winnetka, the average temperature is 3°C (38°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -19°C (-2°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates March temperature patterns in Winnetka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winnetka, March typically has an average temperature of 3°C (38°F), with highs reaching up to 22°C (72°F) and lows dropping to around -19°C (-2°F).

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

March Precipitation in Winnetka

In Winnetka in March, the precipitation amount is 82 mm (3.2 in) over the course of 11 days.

March Precipitation Trends in Winnetka

The chart displays monthly precipitation patterns in Winnetka, 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 Winnetka, March typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Winnetka

In Winnetka in March, humidity is 84%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to you and the moisture creates an oppressive heaviness in the atmosphere.

March Average Humidity in Winnetka

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

In Winnetka 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 Winnetka, you can refer to this Hourly UV Index in Winnetka.

Maximum UV Index Levels in Winnetka for March

The chart shows the monthly maximum UV Index (UVI) for Winnetka 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 Winnetka typically reaches 6, which falls under the high exposure category.

Data source: Winnetka 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 Winnetka Compares to Other Months

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

This table compares monthly weather conditions in Winnetka, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	66 mm (2.6 inches)	82%	moderate
February Weather	-2°C (29°F)	66 mm (2.6 inches)	83%	moderate
March Weather	3°C (38°F)	82 mm (3.2 inches)	84%	high
April Weather	8°C (46°F)	116 mm (4.6 inches)	85%	very high
May Weather	14°C (57°F)	159 mm (6.2 inches)	79%	very high
June Weather	20°C (68°F)	123 mm (4.8 inches)	82%	very high
July Weather	23°C (74°F)	94 mm (3.7 inches)	80%	very high
August Weather	23°C (73°F)	80 mm (3.2 inches)	81%	very high
September Weather	20°C (68°F)	79 mm (3.1 inches)	80%	very high
October Weather	13°C (55°F)	134 mm (5.3 inches)	82%	high
November Weather	4°C (40°F)	62 mm (2.4 inches)	88%	moderate
December Weather	1°C (34°F)	58 mm (2.3 inches)	84%	low