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October Weather in Hillsboro, United States

Last updated: June 24, 2025

In Hillsboro, United States, the average temperature in October hovers around 14°C (58°F). However, temperatures can vary widely, with a minimum of -4°C (25°F) and a sizzling maximum of 33°C (92°F). Expect some precipitation, totaling 119 mm (4.7 in) over 12 days, and enjoy a relatively high humidity level of 76% during this month.

October Temperature in Hillsboro

In October in Hillsboro, the average temperature is 14°C (58°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates October 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, October typically has an average temperature of 14°C (58°F), with highs reaching up to 33°C (92°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec293243526474777470584136
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.

October Precipitation in Hillsboro

In Hillsboro in October, the total precipitation amount is 119 mm (4.7 in), falling over a span of 12 days.

October Precipitation Trends in Hillsboro

The chart displays monthly precipitation patterns in Hillsboro, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Hillsboro, October typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec8081114104149103101108661198167
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Hillsboro

In Hillsboro in October humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.

October Average Humidity in Hillsboro

This chart illustrates the average monthly humidity levels in Hillsboro, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Hillsboro is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Hillsboro

In Hillsboro in October, 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 Hillsboro, you can refer to this Hourly UV Index in Hillsboro.

Maximum UV Index Levels in Hillsboro for October

The chart shows the monthly maximum UV Index (UVI) for Hillsboro in October, 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 October, the maximum UV index in Hillsboro typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Hillsboro October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)80 mm (3.2 inches)87%moderate
February Weather0°C (33°F)81 mm (3.2 inches)85%moderate
March Weather6°C (43°F)114 mm (4.5 inches)86%high
April Weather11°C (52°F)104 mm (4.1 inches)84%very high
May Weather18°C (65°F)149 mm (5.8 inches)79%very high
June Weather23°C (75°F)103 mm (4.1 inches)82%extreme
July Weather25°C (77°F)101 mm (4.0 inches)79%very high
August Weather24°C (75°F)108 mm (4.2 inches)70%very high
September Weather21°C (70°F)66 mm (2.6 inches)69%very high
October Weather14°C (58°F)119 mm (4.7 inches)76%high
November Weather5°C (42°F)81 mm (3.2 inches)88%moderate
December Weather2°C (36°F)67 mm (2.7 inches)87%moderate

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