| NWS Forecast for: San Juan County Issued by: National Weather Service Seattle, WA Last Update: 236 PM PDT Sat Mar 21 2026 | |
| Tonight: Mostly clear in the evening, then mostly cloudy with a chance of rain after midnight. Lows near 40. Southwest wind around 10 mph becoming south after midnight. Sunday: Partly sunny. A slight chance of rain in the morning. Highs in the mid to upper 40s. Southwest wind to 10 mph in the morning becoming light. Sunday Night: Mostly cloudy. Lows in the mid 30s to lower 40s. Light wind. Monday: Partly sunny. Highs in the mid to upper 40s. Light wind. Monday Night: Cloudy. A chance of rain after midnight. Lows near 40. Light wind. Tuesday: Windy. Rain at times. Highs in the lower 50s. Tuesday Night: Showers and a slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the lower 40s. Wednesday: Rain likely. Highs near 50. Wednesday Night: Rain likely. Lows near 40. Thursday: Mostly cloudy with a chance of rain. Highs near 50. Thursday Night: Mostly cloudy. A chance of rain in the evening, then a slight chance of rain after midnight. Lows in the upper 30s. Friday: Mostly sunny with a slight chance of rain. Highs near 50. Friday Night: Partly cloudy. Lows near 40. Saturday: Mostly sunny with a slight chance of rain. Highs in the lower 50s. | |
| Zone Forecast: San Juan County | |
Visit your local NWS office at: https://www.weather.gov/sew |