Weather Forecast for San Juan Islands
Washington, United States of America
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Current Weather - San Juan Islands: 11°C
Current Weather - San Juan Islands: 11°C
Washington, United States of America
Overcast
Feels like 9°C
Wind
9 km/h ESE
Humidity
72%
Pressure
1017 mb
UV Index
1
Visibility
10 km
Overcast
Wednesday, November 04, 2026
High
11°C
Low
7°C
Rain Chance
67%
Hourly Forecast
10°C
10°C
10°C
Day Statistics
Maximum Wind
16 km/h
Humidity
82%
Precipitation
1 mm
UV Index
1
Visibility
9 km
Rain Chance
67%
Snow Chance
0%
Sun & Moon
Sunrise
07:03 AM
Sunset
04:48 PM
Moonrise
01:30 AM
Moonset
02:40 PM
Moon Phase
Waning Crescent
Moon Illumination
20%
Air Quality
PM2.5
23.8
μg/m³
PM10
25.9
μg/m³
NO₂
36.7
μg/m³
O₃
27.4
μg/m³
SO₂
2.3
μg/m³
CO
299.3
μg/m³
Overcast
Thursday, November 05, 2026
High
11°C
Low
9°C
Rain Chance
33%
Hourly Forecast
10°C
10°C
10°C
10°C
10°C
10°C
10°C
9°C
10°C
10°C
10°C
11°C
11°C
10°C
11°C
11°C
11°C
10°C
10°C
10°C
10°C
10°C
10°C
9°C
Day Statistics
Maximum Wind
19 km/h
Humidity
88%
Precipitation
0 mm
UV Index
1
Visibility
10 km
Rain Chance
33%
Snow Chance
0%
Sun & Moon
Sunrise
07:04 AM
Sunset
04:46 PM
Moonrise
02:50 AM
Moonset
02:57 PM
Moon Phase
Waning Crescent
Moon Illumination
13%
Air Quality
PM2.5
6.5
μg/m³
PM10
8
μg/m³
NO₂
13.6
μg/m³
O₃
56.5
μg/m³
SO₂
1.4
μg/m³
CO
156.4
μg/m³
Overcast
Friday, November 06, 2026
High
12°C
Low
9°C
Rain Chance
85%
Hourly Forecast
10°C
10°C
10°C
10°C
10°C
9°C
9°C
9°C
10°C
10°C
10°C
11°C
11°C
11°C
11°C
12°C
11°C
11°C
11°C
11°C
11°C
11°C
11°C
11°C
Day Statistics
Maximum Wind
45 km/h
Humidity
82%
Precipitation
5 mm
UV Index
0
Visibility
8 km
Rain Chance
85%
Snow Chance
0%
Sun & Moon
Sunrise
07:06 AM
Sunset
04:45 PM
Moonrise
04:10 AM
Moonset
03:14 PM
Moon Phase
Waning Crescent
Moon Illumination
6%
Air Quality
PM2.5
6.5
μg/m³
PM10
7.5
μg/m³
NO₂
17.5
μg/m³
O₃
47.4
μg/m³
SO₂
1.5
μg/m³
CO
157.2
μg/m³
Overcast
Saturday, November 07, 2026
High
14°C
Low
10°C
Rain Chance
87%
Hourly Forecast
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
11°C
11°C
11°C
12°C
13°C
12°C
12°C
13°C
11°C
11°C
13°C
14°C
14°C
13°C
14°C
Day Statistics
Maximum Wind
50 km/h
Humidity
88%
Precipitation
5 mm
UV Index
1
Visibility
8 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
07:07 AM
Sunset
04:43 PM
Moonrise
05:31 AM
Moonset
03:33 PM
Moon Phase
New Moon
Moon Illumination
2%
Air Quality
PM2.5
6
μg/m³
PM10
6.8
μg/m³
NO₂
15.7
μg/m³
O₃
50.1
μg/m³
SO₂
1.4
μg/m³
CO
157.2
μg/m³
Sunny
Sunday, November 08, 2026
High
12°C
Low
9°C
Rain Chance
68%
Hourly Forecast
12°C
11°C
12°C
12°C
11°C
11°C
11°C
10°C
10°C
10°C
11°C
10°C
10°C
11°C
11°C
10°C
10°C
10°C
9°C
9°C
9°C
9°C
9°C
9°C
Day Statistics
Maximum Wind
45 km/h
Humidity
78%
Precipitation
3 mm
UV Index
1
Visibility
9 km
Rain Chance
68%
Snow Chance
0%
Sun & Moon
Sunrise
07:09 AM
Sunset
04:42 PM
Moonrise
06:52 AM
Moonset
03:56 PM
Moon Phase
New Moon
Moon Illumination
0%
Air Quality
PM2.5
1.9
μg/m³
PM10
2.8
μg/m³
NO₂
2.5
μg/m³
O₃
93.2
μg/m³
SO₂
0.4
μg/m³
CO
136.6
μg/m³
Partly Cloudy
Monday, November 09, 2026
High
10°C
Low
7°C
Rain Chance
58%
Hourly Forecast
8°C
8°C
8°C
7°C
8°C
8°C
7°C
7°C
7°C
8°C
8°C
9°C
9°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
Day Statistics
Maximum Wind
30 km/h
Humidity
76%
Precipitation
1 mm
UV Index
3
Visibility
9 km
Rain Chance
58%
Snow Chance
0%
Sun & Moon
Sunrise
07:10 AM
Sunset
04:40 PM
Moonrise
08:11 AM
Moonset
04:26 PM
Moon Phase
New Moon
Moon Illumination
0%
Overcast
Tuesday, November 10, 2026
High
11°C
Low
9°C
Rain Chance
87%
Hourly Forecast
10°C
9°C
9°C
9°C
9°C
9°C
9°C
9°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
11°C
11°C
Day Statistics
Maximum Wind
36 km/h
Humidity
80%
Precipitation
11 mm
UV Index
3
Visibility
10 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
07:12 AM
Sunset
04:39 PM
Moonrise
09:26 AM
Moonset
05:05 PM
Moon Phase
New Moon
Moon Illumination
3%
Solar Radiation Data
Shortwave Radiation
339.28
Diffuse Radiation
176.9
DNI
374.84
GTI
158.49
Weather Alerts
Small Craft Advisory issued November 4 at 8:36AM PST until November 5 at 2:00AM PST by NWS Seattle WA
* WHAT...South winds 15 to 25 kt. * WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca and Admiralty Inlet. * WHEN...From 4 PM this afternoon to 2 AM PST Thursday. * IMPACTS...Conditions will be hazardous to small craft.
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