| NWS Forecast for: San Juan County Issued by: National Weather Service Seattle, WA Last Update: 236 AM PDT Tue Sep 15 2026 |  |
| Today: Mostly cloudy in the morning then becoming mostly sunny. Patchy fog in the morning. Highs in the 60s. Light wind becoming north to 10 mph in the afternoon. Tonight: Mostly clear. Lows in the upper 40s to mid 50s. Northwest wind to 10 mph becoming north after midnight. Wednesday: Sunny. Patchy fog in the morning. Highs in the 60s to lower 70s. Light wind becoming north to 10 mph in the afternoon. Wednesday Night: Mostly clear. Lows in the upper 40s to mid 50s. Light wind. Thursday: Sunny. Highs in the mid 60s to lower 70s. Light wind becoming north to 10 mph in the afternoon. Thursday Night: Mostly clear. Lows near 50. Friday: Sunny. Highs in the mid to upper 60s. Friday Night: Mostly clear. Lows near 50. Saturday: Partly sunny. Highs in the 60s. Saturday Night: Mostly clear. Lows near 50. Sunday: Mostly sunny. Highs in the mid to upper 60s. Sunday Night: Partly cloudy. Lows near 50. Monday: Partly sunny. A slight chance of showers in the afternoon. Highs in the mid to upper 60s. | |
| Zone Forecast: San Juan County | |
Visit your local NWS office at: https://www.weather.gov/sew |