March Weather in Hillsboro, United States

Last updated: June 24, 2025

In Hillsboro, United States, the average temperature in March hovers around -3°C (27°F), but be prepared for extremes, as it can dip to a chilling -27°C (-17°F) or rise to a warm 23°C (74°F). Expect some moisture, with approximately 26 mm (1.0 in) of precipitation spread over 5 days. The atmosphere holds a notable 85% humidity, adding to the winter chill.

March Temperature in Hillsboro

In March in Hillsboro, the average temperature is -3°C (27°F). The maximum can reach 23°C (74°F), while the minimum can dip as low as -27°C (-17°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and frigid nights.

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

The chart illustrates March temperature patterns in Hillsboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hillsboro, March typically has an average temperature of -3°C (27°F), with highs reaching up to 23°C (74°F) and lows dropping to around -27°C (-17°F).

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

March Precipitation in Hillsboro

In Hillsboro in March, the precipitation amount is 26 mm (1.0 in) over the course of 5 days.

March Precipitation Trends in Hillsboro

The chart displays monthly precipitation patterns in Hillsboro, 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 Hillsboro, March typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 5 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 Hillsboro

In Hillsboro in March humidity is 85%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps through layers of clothing, making travel seem daunting and the cold air sting your skin.

March Average Humidity in Hillsboro

This chart illustrates the average monthly humidity levels in Hillsboro, 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 Hillsboro is approximately 85%, 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 Hillsboro

In Hillsboro in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Hillsboro.

Maximum UV Index Levels in Hillsboro for March

The chart shows the monthly maximum UV Index (UVI) for Hillsboro 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 Hillsboro typically reaches 5, which falls under the moderate exposure category.

Data source: Hillsboro 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 Hillsboro Compares to Other Months

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

This table compares monthly weather conditions in Hillsboro, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-12°C (10°F)	18 mm (0.7 inches)	90%	low
February Weather	-13°C (9°F)	20 mm (0.8 inches)	92%	moderate
March Weather	-3°C (27°F)	26 mm (1.0 inches)	85%	moderate
April Weather	4°C (40°F)	43 mm (1.7 inches)	81%	high
May Weather	13°C (57°F)	54 mm (2.1 inches)	75%	very high
June Weather	21°C (69°F)	90 mm (3.5 inches)	79%	very high
July Weather	22°C (73°F)	60 mm (2.4 inches)	76%	very high
August Weather	20°C (69°F)	85 mm (3.4 inches)	78%	very high
September Weather	16°C (60°F)	72 mm (2.8 inches)	77%	high
October Weather	7°C (44°F)	80 mm (3.2 inches)	79%	moderate
November Weather	-2°C (28°F)	23 mm (0.9 inches)	86%	moderate
December Weather	-8°C (18°F)	39 mm (1.6 inches)	86%	low