March Weather in McLean, United States

Last updated: June 24, 2025

In McLean, United States, the average temperature in March hovers around 11°C (51°F). However, temperatures can range dramatically, with a minimum of -11°C (12°F) and a peak of 33°C (91°F). Expect about 59 mm (2.3 in) of precipitation spread over 7 days, and enjoy moderate average humidity at 64%.

March Temperature in McLean

In March in McLean, the average temperature is 11°C (51°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as -11°C (12°F). Be sure to pack for a wide range of temperatures when traveling during this time.

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

The chart illustrates March temperature patterns in McLean, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McLean, March typically has an average temperature of 11°C (51°F), with highs reaching up to 33°C (91°F) and lows dropping to around -11°C (12°F).

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

March Precipitation in McLean

In McLean in March, the precipitation amount is 59 mm (2.3 in) over a span of 7 days.

March Precipitation Trends in McLean

The chart displays monthly precipitation patterns in McLean, 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 McLean, March typically receives around 59 mm (2.3 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 McLean

In McLean in March humidity is 64%. With an average temperature of 11°C (51°F), this humidity feels like a chilly, damp blanket wrapping around you, making it essential to dress in layers and enjoy travel activities that are both cozy and invigorating.

March Average Humidity in McLean

This chart illustrates the average monthly humidity levels in McLean, 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 McLean is approximately 64%, 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 McLean

In McLean in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in McLean.

Maximum UV Index Levels in McLean for March

The chart shows the monthly maximum UV Index (UVI) for McLean 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 McLean typically reaches 8, which falls under the very high exposure category.

Data source: McLean 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 McLean Compares to Other Months

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

This table compares monthly weather conditions in McLean, 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 (38°F)	23 mm (0.9 inches)	75%	moderate
February Weather	4°C (39°F)	15 mm (0.6 inches)	76%	high
March Weather	11°C (51°F)	59 mm (2.3 inches)	64%	very high
April Weather	14°C (58°F)	36 mm (1.4 inches)	70%	very high
May Weather	20°C (68°F)	82 mm (3.2 inches)	78%	extreme
June Weather	25°C (77°F)	59 mm (2.3 inches)	81%	extreme
July Weather	27°C (81°F)	36 mm (1.4 inches)	82%	extreme
August Weather	26°C (79°F)	43 mm (1.7 inches)	78%	extreme
September Weather	23°C (73°F)	50 mm (2.0 inches)	72%	very high
October Weather	15°C (59°F)	69 mm (2.7 inches)	73%	high
November Weather	9°C (49°F)	14 mm (0.5 inches)	80%	moderate
December Weather	6°C (42°F)	23 mm (0.9 inches)	81%	moderate