Weather WorldHenderson Lake, WA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Henderson Lake, WA Weather Forecast
Henderson Lake, WA Weather Forecast Date: 236 AM PDT Sat Sep 26 2026
The area/counties/county of: San Juan County, including the cities of: Friday Harbor, Eastsound, and Roche Harbor.or toggle through each period.
Today... Partly sunny in the morning then becoming mostly sunny. Highs in the upper 50s to mid 60s. West wind to 10 mph becoming north in the afternoon.
Tonight... Mostly cloudy. Lows in the mid 40s to lower 50s. North wind to 10 mph.
Sunday... Mostly sunny. Patchy fog in the morning. Highs in the 60s. North wind around 10 mph.
Sunday Night... Mostly clear. Lows in the mid 40s to lower 50s. Southwest wind to 10 mph becoming west after midnight.
Monday... Partly sunny. Highs in the 60s. South wind to 10 mph increasing to 10 to 15 mph in the afternoon.
Monday Night... Mostly cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Lows near 50.
Tuesday... Breezy. Rain at times in the morning, then rain likely in the afternoon. Highs in the 60s.
Tuesday Night... Mostly cloudy with a chance of rain in the evening, then partly cloudy with a slight chance of showers after midnight. Lows near 50.
Wednesday... Mostly sunny. Highs in the lower to mid 60s.
Wednesday Night... Mostly cloudy. A slight chance of rain after midnight. Lows in the mid 40s to lower 50s.
Thursday... Partly sunny. A chance of rain in the morning, then a slight chance of rain in the afternoon. Highs in the lower to mid 60s.
Thursday Night... Partly cloudy with a slight chance of rain. Lows in the mid 40s to lower 50s.
POP = Probability of Precipitation
Henderson Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...