| NWS Forecast for: San Juan County Issued by: National Weather Service Seattle, WA Last Update: 236 AM PDT Sat May 16 2026 | |
| Today: Mostly sunny. A chance of showers in the morning, then a slight chance of thunderstorms in the afternoon. Highs in the mid 50s to lower 60s. West wind 10 to 15 mph. Tonight: Partly cloudy. Lows in the 40s. Southwest wind 10 to 20 mph becoming west 10 to 15 mph after midnight. Gusts to 30 mph. Sunday: Mostly sunny. Highs in the upper 50s to mid 60s. Light wind. Sunday Night: Mostly cloudy. Lows in the mid 40s to lower 50s. Light wind becoming southwest 10 to 15 mph after midnight. Monday: Mostly cloudy in the morning then becoming mostly sunny. Highs in the 60s. Southwest wind to 10 mph becoming south in the afternoon. Monday Night: Partly cloudy. Lows near 50. Tuesday: Partly sunny. Highs in the mid to upper 60s. Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows near 50. Wednesday: Partly sunny. Highs in the mid to upper 60s. Wednesday Night: Partly cloudy. Lows in the lower 50s. Thursday: Partly sunny. Highs near 70. Thursday Night: Partly cloudy. Lows in the lower 50s. Friday: Partly sunny. Highs in the mid 60s to lower 70s. | |
| Zone Forecast: San Juan County | |
Visit your local NWS office at: https://www.weather.gov/sew |