Portland Weather in June

As Portland, Oregon moves into months of dry summer weather, June has a noticeable decline in the frequency of rain. The days are mostly warm, with temperatures reaching into the 70s Fahrenheit (over 20 degrees Celsius).

This page gives detailed information on the typical June temperature, precipitation, sun, humidity, wind and storms for Portland. The numbers here are historical averages based on climate data gathered near the Portland International Airport, located a few miles from downtown Portland.

Temperature Weather iconTemperature

74 °F June average high 23 °C
53 °F June average low 12 °C
20 days 70 °F max. or more (21 °C)
9 days 50 °F min. or less (10 °C)

Nearly every day in June warms to over 60 °F (over 16 °C) in Portland. The city averages 8 days this month when the thermometer reaches into the 80s °F (27 °C). Temperatures of 100 °F (38 °C) or above occur here during June about twice a decade.

Most nights, the thermometer dips to 60 °F (16 °C) or below. But June does not normally get as cold as 40 °F (4 °C).

Rainy Weather iconRain

2.0 in total precipitation 51 mm
9 days of rain

Half the time, Portland receives 1.2 to 2.5 inches (31 to 64 mm) of rainfall in June. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

56 % sunshine
6 days clear skies

The sun's rays reach the ground in Portland during 56 percent of daylight hours on average in June, for a total of 263 hours in the month. Typically on 6 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in June at Portland averages 15 hours and 37 minutes a day. The longest days of the year, from around June 17th to 23rd, last 15 hours and 41 minutes from sunrise to sunset.

Humid Weather iconHumidity

66 % June average humidity

The relative humidity in Portland during June usually peaks at 82 percent in the morning then drops to 49 percent by mid afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 77 82 77 64 53 49 56 69

Windy Weather iconWind

7.2 mph June wind speed average 11.6 kph

June is less windy than most other months in Portland.

Stormy Weather iconStorms

1 day rainfall of 0.5 inches (13 mm) or more
1 day with thunderstorms in June

About every five years, it rains an inch (25 mm) or more during a single day this month in Portland. A June thunderstorm passes over the city in most, but not all, years.


The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.

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