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March Weather in Hillsboro, United States

Last updated: June 24, 2025

In March, the average temperature in Hillsboro, United States hovers around 16°C (62°F). You'll experience a wide temperature range, with minimums dipping to -5°C (23°F) and maximums soaring to 34°C (93°F). Expect about 85 mm (3.3 in) of precipitation over the course of 10 days. The air is quite humid too, with an average humidity of 78%, making it a unique and vibrant time of year!

March Temperature in Hillsboro

In March in Hillsboro, the average temperature is 16°C (62°F). Maximum temperatures can reach 34°C (93°F) and minimums can dip as low as -5°C (23°F). This wide range of temperatures means travelers should be prepared for both warm and chilly conditions during their stay.

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 16°C (62°F), with highs reaching up to 34°C (93°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec485061667582868680695853
Data source: Temperature data for Hillsboro generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Hillsboro

In Hillsboro in March, the precipitation amount is 85 mm (3.3 in) over the course of 10 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 85 mm (3.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec598685102176705591781314457
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Hillsboro

In Hillsboro in March, humidity is 78%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities enjoyable yet slightly sticky. Travelers may find the weather pleasantly mild, though they'll appreciate having light, breathable clothing on hand to stay comfortable while exploring.

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 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
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.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)59 mm (2.3 inches)79%moderate
February Weather10°C (51°F)86 mm (3.4 inches)80%high
March Weather16°C (62°F)85 mm (3.3 inches)78%very high
April Weather19°C (67°F)102 mm (4.0 inches)79%very high
May Weather24°C (75°F)176 mm (6.9 inches)81%extreme
June Weather28°C (82°F)70 mm (2.8 inches)77%extreme
July Weather30°C (86°F)55 mm (2.2 inches)71%extreme
August Weather30°C (86°F)91 mm (3.6 inches)67%extreme
September Weather27°C (80°F)77 mm (3.1 inches)69%very high
October Weather21°C (69°F)131 mm (5.2 inches)73%very high
November Weather14°C (58°F)44 mm (1.7 inches)82%high
December Weather12°C (53°F)56 mm (2.2 inches)87%moderate

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