Seattle Weather in June

Seattle, Washington basks in balmy weather during June. It's a moderately warm month with relatively little rain.

This page gives detailed information on the typical June temperature, precipitation, sun, humidity, wind and storms for Seattle. The weather measurements are averages based on climate data gathered at Seattle — Tacoma International Airport, located south of the city center.

Temperature Weather iconTemperature

71 °F June average high 22 °C
53 °F June average low 12 °C
14 days 70 °F max. or more (21 °C)
29 days 60 °F min. or less (16 °C)

The temperature usually rises every June day to over 60 degrees Fahrenheit (16 degrees Celsius) in Seattle. The city averages 4 days this month when the thermometer reaches into the 80s °F (over 27 °C). Temperatures above 90 °F (32 °C) are uncommon here during June.

The thermometer dips to 50 °F (10 °C) or below on an average of 9 nights. But June does not normally get as cold as 40 °F (4 °C).

Rainy Weather iconRain

1.5 in total precipitation 37 mm
9 days of rain

Half the time, Seattle receives 1.0 to 1.7 inches (24 to 44 mm) of rainfall in June. One in four years has drier weather, while another one in four is wetter.

Sunny Weather iconSun

49 % sunshine
7 days clear skies

The sun's rays reach the ground in Seattle during 49 percent of daylight hours on average in June, for a total of 234 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in June at Seattle averages 15 hours and 55 minutes a day. The longest days of the year, from around June 17th to 24th, last 15 hours and 59 minutes from sunrise to sunset.

Humid Weather iconHumidity

67 % June average humidity

The relative humidity in Seattle during June usually peaks at 81 percent in the morning then drops to 53 percent by late afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 77 81 77 66 56 53 58 70

Windy Weather iconWind

8.6 mph June wind speed average 13.8 kph

June is a little less windy than most other months in Seattle.

Stormy Weather iconStorms

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

Seattle gets a June thunderstorm on an average of once every two 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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