Roche Harbor, San Juan Island, WA Weather Forecast and Current Conditions

Day	Sky	High / Low	Precip	Wind	Humidity
Fri Oct 23	Mostly Cloudy Close Hourly	-º / 40º	8%	SE 4 mph	97%
9pm	Mostly Clear	44º	2%	SSE 1 mph	97%
10pm	Partly Cloudy	43º	2%	SSE 1 mph	100%
11pm	Partly Cloudy	43º	2%	SSE 2 mph	100%
Sat Oct 24	PM Showers View Hourly	51º / 46º	45%	E 10 mph	83%
12am	Partly Cloudy	44º	2%	SSE 1 mph	95%
1am	Cloudy	44º	2%	SSE 2 mph	94%
2am	Cloudy	45º	3%	SE 3 mph	95%
3am	Cloudy	46º	4%	SE 4 mph	96%
4am	Cloudy	46º	8%	SE 4 mph	95%
5am	Cloudy	46º	8%	SE 4 mph	95%
6am	Cloudy	46º	8%	SE 4 mph	95%
7am	Cloudy	46º	8%	SSE 4 mph	95%
8am	Cloudy	46º	8%	SE 3 mph	95%
9am	Cloudy	48º	7%	ESE 4 mph	91%
10am	Cloudy	49º	13%	ESE 5 mph	87%
11am	Cloudy	50º	19%	ESE 5 mph	83%
12pm	Cloudy	50º	18%	E 5 mph	80%
1pm	Showers	51º	40%	ENE 5 mph	77%
2pm	Showers	50º	45%	ENE 7 mph	78%
3pm	Cloudy	51º	24%	NE 8 mph	77%
4pm	Cloudy	51º	14%	NE 9 mph	77%
5pm	Cloudy	50º	20%	NE 9 mph	76%
6pm	Cloudy	49º	24%	NE 9 mph	79%
7pm	Showers	48º	48%	NE 7 mph	81%
8pm	Showers	47º	48%	NE 7 mph	84%
9pm	Showers	47º	52%	NE 7 mph	86%
10pm	Showers	48º	54%	NE 8 mph	87%
11pm	Rain	48º	68%	NE 9 mph	87%
Sun Oct 25	AM Showers View Hourly	54º / 48º	48%	E 14 mph	82%
12am	Rain	47º	76%	NE 9 mph	89%
1am	Rain	47º	82%	NE 8 mph	89%
2am	Rain	47º	78%	NE 8 mph	90%
3am	Rain	48º	75%	ENE 9 mph	89%
4am	Rain	48º	78%	ENE 8 mph	90%
5am	Rain	48º	73%	ENE 10 mph	89%
6am	Light Rain	48º	62%	ENE 10 mph	90%
7am	Showers	48º	49%	E 12 mph	89%
8am	Mostly Cloudy	48º	23%	ENE 10 mph	90%
9am	Mostly Cloudy	49º	24%	ENE 11 mph	89%
10am	Few Showers	50º	31%	E 12 mph	87%
11am	Few Showers	51º	32%	E 13 mph	83%
12pm	Partly Cloudy	52º	17%	E 13 mph	81%
1pm	Partly Cloudy	53º	11%	E 13 mph	76%
2pm	Partly Cloudy	53º	12%	E 13 mph	76%
3pm	Partly Cloudy	54º	19%	E 12 mph	75%
4pm	Mostly Cloudy	54º	16%	E 12 mph	75%
5pm	Mostly Cloudy	53º	12%	E 12 mph	76%
6pm	Mostly Cloudy	52º	15%	E 10 mph	82%
7pm	Mostly Cloudy	51º	12%	ENE 9 mph	85%
8pm	Mostly Cloudy	49º	13%	ENE 8 mph	89%
Mon Oct 26	Partly Cloudy	55º / 46º	16%	NNE 9 mph	80%
Tue Oct 27	PM Showers	54º / 44º	36%	SSE 7 mph	83%
Wed Oct 28	Showers	51º / 43º	54%	ESE 10 mph	81%
Thu Oct 29	AM Showers	50º / 42º	50%	NE 10 mph	75%
Fri Oct 30	Partly Cloudy	51º / 42º	20%	NNE 7 mph	75%

Buoy Data
For Roche Harbor, San Juan Island, WA
Wind Forecast
In Roche Harbor, San Juan Island, WA
Radar
In Roche Harbor, San Juan Island, WA
Marine Forecast
In Roche Harbor, San Juan Island, WA

NOAA Weather Marine Forecast for Roche Harbor, San Juan Island, WA

Tonight

Low : 47ºF
Variable winds 5 kt or less. Increasing clouds. Waves 1 ft or less.

Saturday

High : 53ºF
Variable winds less than 5 kt becoming NE 5 to 7 kt in the afternoon. A chance of rain, mainly between 3pm and 5pm. Waves 1 ft or less.

Saturday Night

Low : 46ºF
NE wind around 9 kt. Rain likely, mainly after 4am. Waves 1 ft or less.

Sunday

High : 54ºF
NE wind 8 to 10 kt. Rain likely, mainly before 11am. Waves 1 ft or less.

Sunday Night

Low : 47ºF
N wind 8 to 10 kt. A chance of rain, mainly before 11pm. Waves 1 ft or less.

Monday

High : 54ºF
N wind 5 to 8 kt. Partly sunny. Waves 1 ft or less.

Monday Night

Low : 46ºF
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Tuesday

High : 53ºF
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

Tuesday Night

Low : 45ºF
Variable winds 5 kt or less. A slight chance of rain. Waves 1 ft or less.

Current Weather Conditions In Roche Harbor, San Juan Island, WA

As Of: 16 minutes ago

Temperature: 44ºF
Feels Like: 44ºF

Wind Speed: 1mph
Direction: 0º (SSE)
Gusts: 1mph

Cloud Cover: Mostly Clear
Visibility: 10mi

Pressure: 30.32"
Humidity: 97%
Dew Point: 0ºF

The weather right now in Roche Harbor, San Juan Island, WA is Mostly Clear. The current temperature is 44°F, and the expected high and low for today, Friday, October 23, 2026, are -° high temperature and 40°F low temperature. The wind is currently blowing at 1 miles per hour, and coming from the South Southeast. The wind is gusting to 1 mph. With the wind and the atmosphere the temperature feels like 44° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 97 percent, and air pressure at 30.32 in. Visibility is 10 nautical miles. There are no current weather alert(s).