March Weather in New Castle, United States

Last updated: June 24, 2025

In March, the average temperature in New Castle, United States hovers around 7°C (45°F). Expect a minimum chill of -9°C (16°F), while peak temperatures can reach up to 28°C (83°F). The month brings about 106 mm (4.2 in) of precipitation over approximately 10 days, accompanied by a high average humidity of 83%.

March Temperature in New Castle

In March in New Castle, the average temperature is 7°C (45°F), with a maximum reaching up to 28°C (83°F) and a minimum dipping as low as -9°C (16°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit.

March Weather in New Castle: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in New Castle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Castle, March typically has an average temperature of 7°C (45°F), with highs reaching up to 28°C (83°F) and lows dropping to around -9°C (16°F).

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

March Precipitation in New Castle

In New Castle in March, the precipitation amount is 106 mm (4.2 in) over a span of 10 days.

March Precipitation Trends in New Castle

The chart displays monthly precipitation patterns in New Castle, 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 New Castle, March typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 10 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 New Castle

In New Castle in March, humidity is 83%. With an average temperature of 7°C (45°F), this humidity feels like a chilly blanket wrapping around you, making travel somewhat uncomfortable as you navigate the dampness that settles in your clothes, leading to a heavy and muggy experience outdoors.

March Average Humidity in New Castle

This chart illustrates the average monthly humidity levels in New Castle, 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 New Castle is approximately 83%, 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 New Castle

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

Maximum UV Index Levels in New Castle for March

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

Data source: New Castle 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 New Castle Compares to Other Months

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

This table compares monthly weather conditions in New Castle, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	64 mm (2.5 inches)	84%	moderate
February Weather	4°C (39°F)	103 mm (4.1 inches)	83%	moderate
March Weather	7°C (45°F)	106 mm (4.2 inches)	83%	high
April Weather	13°C (55°F)	105 mm (4.1 inches)	81%	very high
May Weather	18°C (65°F)	135 mm (5.3 inches)	78%	very high
June Weather	23°C (74°F)	118 mm (4.7 inches)	79%	very high
July Weather	26°C (79°F)	136 mm (5.4 inches)	74%	very high
August Weather	25°C (77°F)	140 mm (5.5 inches)	72%	very high
September Weather	22°C (71°F)	100 mm (3.9 inches)	75%	very high
October Weather	16°C (61°F)	109 mm (4.3 inches)	81%	high
November Weather	8°C (47°F)	83 mm (3.3 inches)	85%	moderate
December Weather	4°C (40°F)	100 mm (3.9 inches)	84%	moderate