San Juan County Weather Forecast
Current Conditions & 10-Day Outlook
Current Weather Conditions in San Juan County
San Juan County
Washington, United States
OvercastHourly San Juan County Weather Forecast
19°19°18°
18°17°15°14°13°14°13°13°12°11°11°12°13°14°15°16°17°17°18°18°18°Very gentle wind.
Minimal chance of precipitation.
San Juan County 10-Day Weather Outlook
Today's Weather in San Juan County, Washington, United States
Thu, Jun 04
Fri, Jun 05
Sat, Jun 06
Sun, Jun 07
Mon, Jun 08
Tue, Jun 09
Wed, Jun 10
Thu, Jun 11
Fri, Jun 12
Feels like
Feels cooler than actual temperature.
Pressure
Expect clear and stable weather.
Humidity
High humidity.
UV
Take precautions.
Gusts
Max speed of wind gusts today.
Cloud Cover
Overcast, expect cloudy conditions.
Daylight
Long days, short nights.
Rain
No rain, dry conditions expected.
Snowfall
No snowfall expected.
Current Air Quality in San Juan County
Get the app for the world’s most accurate hi-res weather forecasts.
4.8
1M+ USERS / 30K RATINGS
About San Juan County Weather
General
This page provides the current weather forecast for San Juan County, Washington, United States, including hourly conditions, a 10-day outlook, wind speed and direction, precipitation, UV index, and air quality - giving you everything you need to plan your day in one view.
Forecast & Methodology
The forecast data on this page is sourced from the ECMWF open-source model - a reliable global model used widely across weather services worldwide. For sailors, boaters, and mariners who need greater accuracy and higher resolution, PredictWind's proprietary forecast models deliver precision down to 1km resolution, updated multiple times daily and validated against real-world observations. Sign up free to access PredictWind's advanced forecasts.
Sailing & Marine Conditions
San Juan County weather forecasts on PredictWind are optimised for sailors and boaters who need precise, reliable wind and wave data for passage planning and day sailing. PredictWind is used by ocean racers, cruising sailors, and commercial vessel operators across United States and worldwide. For detailed marine conditions including wave height, swell period, and offshore wind forecasts, see the San Juan County marine forecast.
Units
Wind speed is displayed in knots - the standard unit used by sailors, weather services, and maritime authorities. Temperature is shown in degrees Celsius. Use the toggle at the top of the page to switch between Celsius and Fahrenheit. Pressure is shown in hPa, rainfall in millimetres, and air quality is available in both US and EU AQI standards.