nomadseason

October Weather in Hillsboro, United States

Last updated: June 24, 2025

In October, the average temperature in Hillsboro, United States hovers around 20°C (69°F). However, be prepared for variability: temperatures can dip to a chilly 1°C (34°F) or soar to a sweltering 37°C (98°F). With about 96 mm (3.8 in) of precipitation spread over 9 days, you might want to pack an umbrella. The average humidity stands at a comfortable 73%, adding to the area's unique climate experience.

October Temperature in Hillsboro

In October in Hillsboro, the average temperature is 20°C (69°F), with maximums reaching up to 37°C (98°F) and minimums dipping as low as 1°C (34°F). This diverse temperature range makes Hillsboro an ideal destination for travelers looking to experience both warm days and cool nights.

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 20°C (69°F), with highs reaching up to 37°C (98°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec485360647379818178685551
Data source: Temperature data for Hillsboro generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
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 96 mm (3.8 in) spread over a period of 9 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 96 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1091591261631321551091381009671121
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Hillsboro

In Hillsboro in October humidity is 73%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making travel slightly sticky but ultimately comfortable as long as you stay hydrated and take breaks in the shade.

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 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111112111110864
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 Weather9°C (48°F)109 mm (4.3 inches)85%moderate
February Weather12°C (53°F)159 mm (6.3 inches)84%high
March Weather16°C (60°F)126 mm (5.0 inches)82%very high
April Weather18°C (64°F)163 mm (6.4 inches)82%extreme
May Weather23°C (74°F)132 mm (5.2 inches)82%extreme
June Weather26°C (79°F)155 mm (6.1 inches)79%extreme
July Weather27°C (81°F)109 mm (4.3 inches)82%extreme
August Weather27°C (81°F)138 mm (5.4 inches)77%extreme
September Weather25°C (78°F)100 mm (3.9 inches)74%very high
October Weather20°C (69°F)96 mm (3.8 inches)73%very high
November Weather13°C (55°F)70 mm (2.8 inches)85%high
December Weather11°C (52°F)121 mm (4.8 inches)88%moderate

Compare Hillsboro's Climate with Cities Worldwide