Portland
Oregon, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
Portland, OR

A colorful autumn view of the outline of Portland City, Oregon, with mountains in the distance
A colorful autumn view of the outline of Portland City, Oregon, with mountains in the distance
July is the sunniest and driest month of the year in Portland with a massive 332 hours of sunshine and only 0.6" (15.2mm) of rainfall. The crowds swell during summer vacations as the average high temperature is at a temperate 80.6°F (27°C) in July and the humidity at the lowest of the year at 62.8%.
The thermometer rises to 90°F (32.2°C) for a few days but rarely touches 100°F (37.8°C).
People flock at historical landmarks such as Hawthorne Bridge, Steel Bridge, and Broadway Bridge that span the Willamette River. However, Mount Rainier and Mount Saint Helens also provide picturesque views in the clear skies of July.

What is the temperature in July in Portland?

In Portland, in July, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 57.7°F (14.3°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines relative humidity and air temperature, in July is appraised at 82.9°F (28.3°C).

What is the least humid month in Portland?

July is the least humid month in Portland, with an average relative humidity of 62.8%.

What is the average humidity in July in Portland?

The average relative humidity in July in Portland, Oregon, is 62.8%.

How much does it rain in Portland in July?

In Portland, in July, it is raining for 4.1 days, with typically 0.6" (16.5mm) of accumulated precipitation.

What is the driest month in Portland?

The month with the least rainfall in Portland is July when the rain falls for 4.1 days and typically collects 0.6" (16.5mm) of precipitation.

When it does not snow in Portland?

April through October are months without snowfall in Portland.

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

The average length of the day in July is 15.3h.

What month has the most sunshine in Portland?

The month with the most sunshine in Portland is July, with an average of 10.7h of sunshine.

How many hours of sunshine does Portland have in July?

In Portland, Oregon, the average sunshine in July is 10.7h.

When is the highest UV index in Portland?

July is the month with the highest UV index, with an average maximum UV index of 8.

What is the UV index intensity in July in Portland?

The average daily maximum UV index in July in Portland is 8. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV radiation.
Average temperature in July - Portland, OR
  • Average high temperature in July: 80.6°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.6°F).

  • Average low temperature in July: 57.8°F

The month with the highest average low temperature is August (58°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).

Average humidity in July - Portland, OR
  • Average humidity in July: 62.8%

The month with the highest relative humidity is December (82.7%).
The month with the lowest relative humidity is July (62.8%).

Average rainfall in July - Portland, OR
  • Average rainfall in July: 0.7"

The wettest month (with the highest rainfall) is November (5.6").
Driest months (with the lowest rainfall) are July and August (0.7").

Average rainfall days in July - Portland, OR
  • Average rainfall days in July: 4.1 days

The month with the highest number of rainy days is November (19 days).
The month with the lowest number of rainy days is August (3.9 days).

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

The month with the highest snowfall is February (2.1").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

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

Months with the highest number of snowfall days are February and December (1.5 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in July / Average sunshine in July - Portland, OR
  • Average daylight in July: 15.3h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in July: 10.7h

The month with most sunshine is July (Average sunshine: 10.7h).
The month with least sunshine is December (Average sunshine: 2.1h).

Average UV index in July - Portland, OR
  • Average UV index in July: 8

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).