7-Day Zone Forecast for San Juan County (Text-Only)
NWS Forecast for: San Juan County
Issued by: National Weather Service Seattle, WA
Last Update: 236 PM PDT Fri Mar 20 2026




Tonight: Partly cloudy then becoming mostly cloudy in the late evening and early morning then becoming partly cloudy. Lows in the mid 30s to lower 40s. West wind 10 to 15 mph with gusts to 25 mph.

Saturday: Sunny. Highs in the mid 40s to lower 50s. West wind to 10 mph.

Saturday Night: Mostly clear with a slight chance of rain 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: Mostly cloudy. A chance of rain in the morning. Highs in the mid 40s to lower 50s. South wind around 10 mph.

Sunday Night: Mostly cloudy. Lows in the mid 30s to lower 40s. Light wind.

Monday: Mostly cloudy. Highs in the upper 40s.

Monday Night: Mostly cloudy. A chance of rain after midnight. Lows in the lower 40s.

Tuesday: Rain at times. Highs in the lower 50s.

Tuesday Night: Rain at times. Lows in the lower 40s.

Wednesday: Rain at times in the morning, then rain likely in the afternoon. Highs near 50.

Wednesday Night: Mostly cloudy with a chance of rain. Lows in the upper 30s.

Thursday: Mostly sunny. A chance of rain in the morning, then a slight chance of rain in the afternoon. Highs near 50.

Thursday Night: Partly cloudy with a slight chance of rain. Lows in the upper 30s.

Friday: Mostly sunny with a slight chance of rain. Highs near 50.







Zone Forecast: San Juan County

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