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June Weather in Hillsboro, United States

Last updated: June 24, 2025

In Hillsboro, United States, the average temperature in June hovers around 21°C (69°F), with a minimum dipping to 6°C (44°F) and a sweltering maximum reaching 40°C (105°F). Expect 90 mm (3.5 in) of precipitation spread over 9 days, while the air remains comfortably humid with an average humidity of 79%.

June Temperature in Hillsboro

In June in Hillsboro, the average temperature is 21°C (69°F). Maximum temperatures can soar to 40°C (105°F), while minimums can drop to as low as 6°C (44°F). Travelers should be prepared for a wide range of temperatures and plan their wardrobe accordingly.

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

The chart illustrates June 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, June typically has an average temperature of 21°C (69°F), with highs reaching up to 40°C (105°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec10927395669726860442817
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.

June Precipitation in Hillsboro

In Hillsboro in June, the precipitation amount is 90 mm (3.5 in) over the course of 9 days.

June Precipitation Trends in Hillsboro

The chart displays monthly precipitation patterns in Hillsboro, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Hillsboro, June typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec182026435490608572802339
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Hillsboro

In Hillsboro in June, humidity is 79%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making it ideal for leisurely explorations yet challenging for those unaccustomed to the mugginess while traveling.

June Average Humidity in Hillsboro

This chart illustrates the average monthly humidity levels in Hillsboro, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Hillsboro is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%92%85%81%75%79%77%78%77%79%86%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Hillsboro

In Hillsboro in June, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hillsboro.

Maximum UV Index Levels in Hillsboro for June

The chart shows the monthly maximum UV Index (UVI) for Hillsboro in June, 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 June, the maximum UV index in Hillsboro typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789987432
Data source: Hillsboro June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
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 Weather4°C (40°F)43 mm (1.7 inches)81%high
May Weather13°C (57°F)54 mm (2.1 inches)75%very high
June Weather21°C (69°F)90 mm (3.5 inches)79%very high
July Weather22°C (73°F)60 mm (2.4 inches)76%very high
August Weather20°C (69°F)85 mm (3.4 inches)78%very high
September Weather16°C (60°F)72 mm (2.8 inches)77%high
October Weather7°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

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