Ocean swell will be highest today and again Tuesday. 1-Day 3-Day 5-Day Graph Plots Open in Graphs What's the Winter Weather Like in the San Juans? Free 30 Day Long Range Weather Forecast for San Juan, San Juan. The average high during this season is between 49.8°F (9.9°C) and 44.6°F (7°C). A few passing showers possible across the east in the morning and in the west in the afternoon. San Juan Island - Smallpox Bay weather forecast issued today at 10:39 am. The temperatures are similar, for example, and while it does rain more than in the summer season, clear skies are common. San Juan Island traffic updates reporting highway and road conditions with live interactive map including flow, delays, accidents, construction, closures,traffic jams and congestion, driving conditions, text alerts, gridlock, and driving conditions for the San Juan Island area. Highs in the 50s and 60s can be expected during the day, and the average lows range from around 50 to 40 degrees. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! Check the wind report for San Juan Islands / Eastsound to search for the best travel destinations for your kiteboarding, windsurfing or sailing vacations in United States. The combination of a northeasterly swell and moderate to locally fresh winds will create choppy and hazardous seas. And they lie in the rain shadow of Washington's Olympic Mountains. Humidity. in Washington, United States. 2021 The current temperature is 46°F, and the expected high and low for today, Thursday, January 7, 2021, are 46°F high temperature and 42°F low temperature. NOAA National Weather Service San Juan, PR. It's no wonder visitors are attracted to the islands year round! We promote members to newcomers and longtime islanders alike. San Juan Island Weather. The mountains help to block cold weather systems from Canada, and together with Vancouver Island, they also help to keep the rain at bay in the San Juans. Know what's coming with AccuWeather's extended daily forecasts for San Juan Island, WA. Small Craft Advisory from midnight tonight to noon PST Monday for Central U.S. Temperature Forecast NOAA; Temperature Real-Time ; Seattle Radar; National Satellite; National Synoptic; San Juan Island - Friday Harbor Temperature Statistics . Weather. Find what to do today, this weekend, or in January. The information presented below gives detailed historical monthly average weather conditions along with exceptional weather occurrences. And they lie in the rain shadow of Washington's Olympic Mountains. January Temperature Friday Harbor Airport (3.7 miles) 2021 December January. Typical pacific north-west weather does not apply to the San Juan Islands! 10 mi. 12 mph. Rain? Visitor Information. The climate of the San Juan Islands is sub-oceanic, with quite mild, rainy winters and mild, fairly sunny summers. Washington's best trails for hiking are found along Snoqualmie Pass, which is not far from S... Destination 360 is your friendly travel guide. Island … Next forecast at approx. The area is less temperate than some — in the 38th percentile for pleasant weather — compared to tourist destinations worldwide. Check out the Orcas Island ferry landing, the Friday Harbor waterfront, Lime Kiln Point State Park, or Roche Harbor airport and get a feel for island life. Things to Do in San Juan Island, San Juan Islands: See Tripadvisor's 34,845 traveler reviews and photos of San Juan Island tourist attractions. Additional information. Island Cam. Power outages and tree damage possible in these areas. This in turn influences the air temperature. San Juan Extended Forecast with high and low temperatures. With an average daytime temperature of 46-48 degrees Fahrenheit in December, January and February, winter in the San Juan Islands is mild compared to many other regions of the United States. The Cascade Mountains, the Olympic Mountains, Vancouver Island, and the area waters are largely responsible for the wonderful San Juan Islands weather. Synopsis: A frontal system will hang up over the area through Tuesday night then push inland on Wednesday.Another front will move through the area Thursday night. Waters Strait Of Juan De Fuca. 50S and 60s can be expected during the warmer summer months 's coming with AccuWeather 's extended forecasts... Dry conditions form micro-climates on some Islands where you may even find cactus., on average address unless you sign up for one of Island Cam four... The us was decided then maybe the blooming flowers will seal the.... Waters moderate Island temperatures and produce a typically mild maritime climate days of highs! 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