Portland Weather in July
During July, Portland experiences high daytime temperatures of 27°C (81°F) and cooler nights around 14°C (57°F). As part of the summer season, minimal rainfall is to be expected.
Rainfall in Portland in July
You can expect rain on roughly 4 days based on historical data, averaging 14 mm (0.6 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Portland in July
July tends to be one of the perfect months in Portland, with 27°C (81°F) in the afternoon and 14°C (57°F) overnight. July is known for being in the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Portland in July
With approximately 332 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Portland in July
Average wind speeds reach 3 m/s (6 knots) in July, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Portland's climate page.
Portland Temperature in July
Min Temperature
14°C (57°F)
Max Temperature
27°C (81°F)
Chance of Rain
14%
Precipitation
14 mm (0.6 in)
Rainy days
4 days
Humidity
63%
Windspeed
3 m/s (6 knots)
Sunshine
332 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Portland typically rise from around 25°C (77°F) at the start of July to approximately 28°C (82°F) by the end. Nights are pleasant, with lows around 15°C (59°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Portland in July
Browse day-by-day weather records for Portland spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Portland historical weather extremes in July
Our historical data for Portland spans 1976 to 2025, revealing these weather extremes.
- The hottest July day on record in Portland reached 41°C (106°F) (July 28, 2009).
- The coldest July day was on July 5, 1988, with a maximum of 15°C (59°F).
- Nighttime temperatures dropped to 8°C (46°F) on July 2, 1976, marking the coldest July night on record.
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
perfect weather
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unpleasant
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What to Wear in Portland in July
Warm but pleasant conditions in Portland in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Portland in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Portland's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Portland climate overview or explore weather in the United States of America.
