| NWS Forecast for: San Juan County Issued by: National Weather Service Seattle, WA Last Update: 236 PM PDT Thu May 21 2026 | |
| Tonight: Mostly clear. Lows in the upper 40s to mid 50s. West wind 10 to 15 mph becoming north after midnight. Friday: Mostly sunny. Highs in the mid 60s to lower 70s. Light wind. Friday Night: Mostly cloudy. Lows in the upper 40s to mid 50s. Light wind. Saturday: Mostly sunny. Highs near 60. Light wind. Saturday Night: Partly cloudy. Lows near 50. Southwest wind 10 to 20 mph with gusts to 30 mph. Sunday: Partly sunny. Highs in the lower to mid 60s. Sunday Night: Mostly cloudy with a chance of rain in the evening, then cloudy with rain likely after midnight. Lows near 50. Memorial Day: Breezy. Rain likely. Highs in the lower to mid 60s. Monday Night: Mostly cloudy. A chance of rain in the evening, then a slight chance of showers after midnight. Lows near 50. Tuesday: Mostly sunny. Highs in the mid to upper 60s. Tuesday Night: Partly cloudy. Lows near 50. Wednesday: Mostly sunny. Highs in the mid 60s to lower 70s. Wednesday Night: Partly cloudy. Lows in the lower 50s. Thursday: Mostly sunny. A slight chance of showers in the morning. Highs in the mid 60s to lower 70s. | |
| Zone Forecast: San Juan County | |
Visit your local NWS office at: https://www.weather.gov/sew |