October Weather in Hillsboro, United States

Last updated: June 24, 2025

In October, the average temperature in Hillsboro, United States hovers around 19°C (66°F). Expect a range of lows at 3°C (37°F) and highs soaring to 36°C (98°F). With an average precipitation of 108 mm (4.2 in) spread over 9 days, and a humidity level of 74%, be prepared for a mix of warmth and wetness during your stay!

October Temperature in Hillsboro

In October in Hillsboro, the average temperature is 19°C (66°F). Maximums can reach 36°C (98°F), while minimums can dip to 3°C (37°F). Be prepared for a wide range of temperatures when traveling during this month in Hillsboro.

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 19°C (66°F), with highs reaching up to 36°C (98°F) and lows dropping to around 3°C (37°F).

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

October Precipitation in Hillsboro

In Hillsboro in October, the precipitation amount is 108 mm (4.2 in) spread over 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 108 mm (4.2 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Hillsboro

In Hillsboro in October humidity is 74%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it ideal for leisurely outdoor exploration but potentially heavy for those not accustomed to tropical conditions.

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 74%, offering insight into how humid the weather typically is during this month.

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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check 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 7, which falls under the high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	114 mm (4.5 inches)	87%	moderate
February Weather	9°C (49°F)	178 mm (7.0 inches)	87%	high
March Weather	13°C (56°F)	175 mm (6.9 inches)	85%	very high
April Weather	17°C (62°F)	147 mm (5.8 inches)	82%	very high
May Weather	22°C (72°F)	105 mm (4.1 inches)	83%	extreme
June Weather	25°C (78°F)	118 mm (4.7 inches)	82%	extreme
July Weather	27°C (81°F)	99 mm (3.9 inches)	78%	extreme
August Weather	27°C (80°F)	107 mm (4.2 inches)	67%	very high
September Weather	24°C (76°F)	102 mm (4.0 inches)	64%	very high
October Weather	19°C (66°F)	108 mm (4.2 inches)	74%	high
November Weather	11°C (51°F)	71 mm (2.8 inches)	87%	moderate
December Weather	9°C (48°F)	144 mm (5.7 inches)	88%	moderate