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Roche Harbor, WA - San Juan Island Marine Weather Forecast

Station FRDW1 - 9449880 - Friday Harbor, WA

October 1, 2026 9:36 pm PDT
Location: 48.545N 123.012W
Wind Direction: NNE (20°)
Wind Speed: 1.0 knots
Wind Gust: 1.9 knots
Atmospheric Pressure: 30.04 in (1017.2 mb)
Air Temperature: 53.8°F (12.1°C)


Tonight - 49°F
Oct 02, 2026
0 mph
Mostly Cloudy then Patchy Fog
Patchy fog after 3am. Mostly cloudy. Low around 49, with temperatures rising to around 51 overnight. Wind around 0 mph.
Friday - 61°F
Oct 02, 2026
0 to 5 mph SSE
Patchy Fog then Partly Sunny
Patchy fog before 8am. Partly sunny. High near 61, with temperatures falling to around 59 in the afternoon. South southeast wind 0 to 5 mph.
Friday Night - 49°F
Oct 02, 2026
0 to 5 mph NW
Patchy Fog
Patchy fog between 9pm and 2am. Mostly cloudy. Low around 49, with temperatures rising to around 51 overnight. Northwest wind 0 to 5 mph.
Saturday - 61°F
Oct 03, 2026
5 to 8 mph NNW
Mostly Sunny
Mostly sunny, with a high near 61. North northwest wind 5 to 8 mph.
Saturday Night - 50°F
Oct 03, 2026
1 to 6 mph NNW
Mostly Clear
Mostly clear, with a low around 50. North northwest wind 1 to 6 mph.
Sunday - 62°F
Oct 04, 2026
3 mph NNW
Sunny
Sunny, with a high near 62.
Sunday Night - 49°F
Oct 04, 2026
2 mph NNW
Partly Cloudy
Partly cloudy, with a low around 49.
Monday - 63°F
Oct 05, 2026
0 to 5 mph SW
Mostly Sunny
Mostly sunny, with a high near 63.
Monday Night - 48°F
Oct 05, 2026
0 to 5 mph SW
Partly Cloudy
Partly cloudy, with a low around 48.
Tuesday - 59°F
Oct 06, 2026
0 to 3 mph SW
Partly Sunny
Partly sunny, with a high near 59.
Tuesday Night - 48°F
Oct 06, 2026
2 mph WNW
Mostly Cloudy
Mostly cloudy, with a low around 48.
Wednesday - 59°F
Oct 07, 2026
0 to 5 mph NNW
Partly Sunny
Partly sunny, with a high near 59.
Wednesday Night - 48°F
Oct 07, 2026
0 to 3 mph N
Partly Cloudy
Partly cloudy, with a low around 48.
Thursday - 60°F
Oct 08, 2026
0 to 5 mph SSE
Mostly Sunny
Mostly sunny, with a high near 60.

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