July Weather in Hillsboro, United States

Last updated: June 24, 2025

In Hillsboro, United States, the average temperature in July hovers around 27°C (80°F). Visitors can expect a minimum of 14°C (58°F) and a maximum soaring to 40°C (105°F). With an average precipitation of 79 mm (3.1 in) spread over 8 days, and humidity levels reaching 81%, it's advisable to prepare for a mix of warmth and moisture.

July Temperature in Hillsboro

In July in Hillsboro, the average temperature is 27°C (80°F). Maximum temperatures can soar to 40°C (105°F), while minimums can drop to as low as 14°C (58°F). Be sure to pack both light clothing for the heat and warmer layers for the cooler evenings when traveling.

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

The chart illustrates July 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, July typically has an average temperature of 27°C (80°F), with highs reaching up to 40°C (105°F) and lows dropping to around 14°C (58°F).

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

July Precipitation in Hillsboro

In Hillsboro in July, the precipitation amount is 79 mm (3.1 in) during 8 days, indicating a relatively wet period for the area.

July Precipitation Trends in Hillsboro

The chart displays monthly precipitation patterns in Hillsboro, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Hillsboro, July typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Hillsboro

In Hillsboro in July, humidity is 81%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, but the vibrant atmosphere can still be invigorating, inviting moments of exploration in slower, more deliberate steps.

July Average Humidity in Hillsboro

This chart illustrates the average monthly humidity levels in Hillsboro, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Hillsboro is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Hillsboro

In Hillsboro in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Hillsboro.

Maximum UV Index Levels in Hillsboro for July

The chart shows the monthly maximum UV Index (UVI) for Hillsboro in July, 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 July, the maximum UV index in Hillsboro typically reaches 11, which falls under the extreme exposure category.

Data source: Hillsboro July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	32 mm (1.3 inches)	76%	moderate
February Weather	1°C (34°F)	33 mm (1.3 inches)	77%	high
March Weather	8°C (47°F)	80 mm (3.1 inches)	70%	high
April Weather	13°C (55°F)	73 mm (2.9 inches)	73%	very high
May Weather	19°C (66°F)	175 mm (6.9 inches)	82%	very high
June Weather	25°C (78°F)	95 mm (3.8 inches)	82%	extreme
July Weather	27°C (80°F)	79 mm (3.1 inches)	81%	extreme
August Weather	25°C (77°F)	138 mm (5.4 inches)	78%	very high
September Weather	22°C (72°F)	80 mm (3.1 inches)	71%	very high
October Weather	14°C (57°F)	97 mm (3.8 inches)	71%	high
November Weather	7°C (45°F)	29 mm (1.1 inches)	81%	moderate
December Weather	3°C (38°F)	29 mm (1.1 inches)	84%	moderate