July weather forecast
Hillsboro, OR

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The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon
The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon

Weather in July

As the warmest month in Hillsboro, July showcases peak summer with an average high temperature reaching as much as 80.6°F (27°C), reflective of the city's moderate summer weather. Humidity is relatively low, and the frequency of rainfall reaches its annual low. CBSunshine seems to take center stage with the maximum average duration of 10.5 hours per day, resulting in bright, captivating sunrises and sunsets. The scarcity of any significant rainfall and little cloud cover open up abundant opportunities for stargazing and night-time events. Despite occasional winds gusting at 6.9mph (11.1km/h), July overall is characterized by calm, sunny weather perfect for abundant summer activities.

Temperature

With the onset of July, the average high-temperature subtly transitions from an agreeable 72.7°F (22.6°C) in June to a moderately hot 80.6°F (27°C). A considerable shift from the daytime highs is observed in Hillsboro during July nights, with an average low of 53.4°F (11.9°C).

Heat index

July's heat index is appraised at 82.4°F (28°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in July is 65%.

Rainfall

In Hillsboro, during July, the rain falls for 5.1 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Hillsboro, during the entire year, the rain falls for 173 days and collects up to 29.49" (749mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Hillsboro, the average length of the day in July is 15h and 16min.
On the first day of July, sunrise is at 5:27 am and sunset at 9:04 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:40 pm PDT.

Sunshine

In Hillsboro, the average sunshine in July is 10.5h.

UV index

With an average maximum UV index of 6, July is the month with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Jun 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are July temperatures?

During July, Hillsboro experiences an average high-temperature of 80.6°F (27°C) and a low-temperature of 53.4°F (11.9°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 82.4°F (28°C).

What is the average humidity in July?

The average relative humidity in July is 65%.

How much does it rain in July?

In Hillsboro, in July, it is raining for 5.1 days, with typically 0.39" (10mm) of accumulated precipitation.

When it does not snow?

April through October are months without snowfall.

What is the average length of the day in July in Hillsboro?

In July, the average day length is 15h and 16min.

When are sunrise and sunset in July in Hillsboro?

In July, on the first day of the month, sunrise is at 5:27 am and sunset at 9:04 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:40 pm PDT.

How many hours of sunshine does Hillsboro have in July?

In July, the average sunshine duration is 10.5h.

When is the highest UV index in Hillsboro?

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the UV index intensity in July?

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Hillsboro, OR

Average temperature in July - Hillsboro, OR
  • Average high temperature in July: 80.6°F

The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (43.9°F).

  • Average low temperature in July: 53.4°F

The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (34°F).

Average pressure in July
Hillsboro, OR

Average pressure in July - Hillsboro, OR
  • Average pressure in July: 30.04"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in July
Hillsboro, OR

Average wind speed in July - Hillsboro, OR
  • Average wind speed in July: 4.6mph

The windiest month (with the highest average wind speed) is March (5mph).
The calmest months (with the lowest average wind speed) are June, August and September (4.3mph).

Average humidity in July
Hillsboro, OR

Average humidity in July - Hillsboro, OR
  • Average humidity in July: 65%

The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is August (64%).

Average rainfall in July
Hillsboro, OR

Average rainfall in July - Hillsboro, OR
  • Average rainfall in July: 0.39"

The wettest month (with the highest rainfall) is January (4.57").
The driest month (with the least rainfall) is August (0.31").

Average rainfall days in July
Hillsboro, OR

Average rainfall days in July - Hillsboro, OR
  • Average rainfall days in July: 5.1 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (4.4 days).

Average snowfall in July
Hillsboro, OR

Average snowfall in July - Hillsboro, OR
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in July
Hillsboro, OR

Average snowfall days in July - Hillsboro, OR
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Hillsboro, OR

Average daylight in July / Average sunshine in July - Hillsboro, OR
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in July: 10h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in July
Hillsboro, OR

Average sunshine days in July - Hillsboro, OR
  • Average sunshine days in July: 24.4 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (8.5 days).

Average UV index in July
Hillsboro, OR

Average UV index in July - Hillsboro, OR
  • Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in July
Hillsboro, OR

Average cloud cover in July - Hillsboro, OR
  • Average cloud cover in July: 27

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in July
Hillsboro, OR

Average visibility in July - Hillsboro, OR
  • Average visibility in July: 6mi

The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January and February (4mi).

Hillsboro, Oregon, USA

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