Weather in Portland in July 2025
Average weather
Average temperature in Portland in July
The temperature in July is +88°F on average, with a range between a maximum of +97°F during the day and a minimum of +54°F at night.
The average maximum temperature goes down 4% by the end of the month, compared with the beginning of the month, from +84°F to +82°F.
Is Portland warm or cold in July?
Portland is typically warm in July.
Maximum temperatures go up compared to the previous month from +75°F to +82°F. The minimum temperature also goes up from +54°F to +57°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
July is one of the warmest months in Portland, here is the comparison with other months:
Climate in Portland in July
| June | July | August | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +75°F | +82°F | +82°F | ||||
| Min. temperature | ||||||
| +39°F | +43°F | +45°F | ||||
| Max. temperature | ||||||
| +115°F | +108°F | +106°F | ||||
| Rainfall | ||||||
| 59 mm | 37 mm | 16 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 69% | 64% | 63% | ||||
| Air pressure | ||||||
| 1016 HPa | 1016 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 5 | 13 | 12 | ||||
| Cloudy days | ||||||
| 12 | 11 | 12 | ||||
| Rainy days | ||||||
| 12 | 7 | 6 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
July weather is still as good as in June. It’s getting warmer as July arrives. The average maximum temperature goes up from +75°F to +82°F during the day. As July arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 59 mm to 37 mm. It feels drier, as humidity decreases from 69% to 64%. The average wind speed doesn’t change much during July, staying around 1 m/s. The good news is there are likely to be more sunny days in July, from 5 to 13.
But maybe it is worth considering traveling in August as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Portland is gradually decreasing during July, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last July in Portland?
Climate Change Over the Years
The climate in Portland in July has not changed that much over the last 43 years.
The average temperature was the lowest in 2011 (+61°F) and the highest in 2015 (+67°F). The driest year was 1985 with only 736 mm of rainfall, and the wettest year was 2021 with 4296 mm.
FAQ
Is July a good time to visit Portland?
Can you sunbathe in Portland in July?
Is Portland rainy in July?
Is it sunny in Portland in July?
Other cities in USA
Monthly weather in Portland
Source of the data
For this page, we’ve looked at the typical weather in Portland, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.