| NWS Forecast for: San Juan County Issued by: National Weather Service Seattle, WA Last Update: 236 AM PDT Tue Aug 18 2026 |  |
| Today: Partly sunny in the morning then becoming sunny. Highs in the mid 60s to lower 70s. Light wind. Tonight: Partly cloudy. Lows in the 50s. Light wind. Wednesday: Mostly sunny. Highs in the mid 60s to lower 70s. Light wind. Wednesday Night: Partly cloudy. Lows in the 50s. Light wind. Thursday: Mostly sunny. Highs in the mid 60s to lower 70s. Light wind. Thursday Night: Mostly clear. Lows in the lower to mid 50s. Friday: Partly sunny with a slight chance of showers. Highs in the upper 60s to mid 70s. Friday Night: Mostly cloudy with a chance of showers in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the lower to mid 50s. Saturday: Partly sunny. A slight chance of showers in the morning. Highs in the mid 60s to lower 70s. Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s. Sunday: Partly sunny. Highs in the mid 60s to lower 70s. Sunday Night: Mostly clear. Lows in the lower to mid 50s. Monday: Mostly sunny. Highs in the mid 60s to lower 70s. | |
| Zone Forecast: San Juan County | |
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