SAN JUAN ISLAND, WA 98250 Weather Forecast & Current Conditions

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FRIDAY HARBOR, WA
Current Weather

9:53 PM PDT MAY 23, 2026
Clear
52°F
Feels Like: 49°F
Dewpoint: 43°F
Rel. Hum.: 71%
Visibility: 10 miles
Wind: W at 8 mph
Pressure: 29.98 inches
Last 72 hours

Local Area Snow Depth

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SAN JUAN ISLAND, WA 98250
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly cloudy then becoming partly cloudy late in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. Southwest wind 10 to 20 mph with gusts to 30 mph.
SUNDAY
Mostly sunny. Highs in the 60s. Southwest wind to 10 mph becoming south in the afternoon, gusts to 20 mph in the morning.
SUNDAY NIGHT
Mostly cloudy. A slight chance of rain in the morning. Lows near 50. Light wind.
MEMORIAL DAY
Windy. Cloudy with a chance of rain in the morning, then mostly cloudy with rain likely in the afternoon. Rainfall amounts less than a tenth of an inch likely. Highs in the 60s. Southeast wind 20 to 30 mph becoming south 15 to 25 mph in the afternoon.
MONDAY NIGHT
Rain at times in the evening, then rain likely after midnight. Rainfall amounts less than a tenth of an inch likely. Lows in the mid 40s to lower 50s. Southeast wind to 10 mph.
TUESDAY
Partly sunny in the morning then becoming sunny. Highs in the lower to mid 60s.
TUESDAY NIGHT
Mostly clear. Lows near 50.
WEDNESDAY
Sunny. Highs in the mid 60s to lower 70s.
WEDNESDAY NIGHT
Partly cloudy. Lows in the lower 50s.
THURSDAY
Mostly sunny. Highs in the mid 60s to lower 70s.
THURSDAY NIGHT
Partly cloudy. Lows in the lower 50s.
FRIDAY
Partly sunny. Highs in the mid to upper 60s.
FRIDAY NIGHT
Partly cloudy. Lows in the upper 40s.

Visible Weather Satellite
SAN JUAN ISLAND, WA 98250
Infrared Weather Satellite
SAN JUAN ISLAND, WA 98250
NEXRAD Weather Radar
SAN JUAN ISLAND, WA 98250

FRIDAY HARBOR, WA 3 hourly weather forecast

weather forecast created  7:00 PM CDT  5/23/2026
Sunday
24 MAY 2026
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 0 hours 11 PM 52° 49° Partly Cloudy 1%

0% Thunder
( 0% severe)
WSW   9 77% 45°
Low 48° SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 3 hours 2 AM 50° 47° Mostly Cloudy WSW   7 80% 44°
High 66° SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 6 hours 5 AM 49° 47° Mostly Cloudy 2%

0% Thunder
( 0% severe)
SW   5 86% 45°

Partly Cloudy



SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 9 hours 8 AM 54° 53° Partly Cloudy SSW   5 74% 46°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 12 hours 11 AM 60° 59° Partly Cloudy 4%

0% Thunder
( 0% severe)
S   8 60% 46°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 15 hours 2 PM 63° 63° Partly Cloudy SSE   7 54% 46°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 18 hours 5 PM 65° 65° Partly Cloudy 7%

0% Thunder
( 1% severe)
S   5 50% 46°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 21 hours 8 PM 60° 61° Mostly Cloudy   CALM 62% 47°
Monday
25 MAY 2026
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 0 hours 11 PM 54° 54° Mostly Cloudy 23%
RAIN
<.01 in
0% Thunder
( 2% severe)
  CALM 77% 47°
Low 49° SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 3 hours 2 AM 52° 52° Mostly Cloudy   CALM 83% 47°
High 65° SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 6 hours 5 AM 52° 52° Overcast 19%
RAIN
<.01 in
0% Thunder
( 2% severe)
  CALM 77% 45°

Mostly Cloudy

Rain Likely

SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 9 hours 8 AM 57° 55° Mostly Cloudy SE   9 67% 46°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 12 hours 11 AM 62° 60° Mostly Cloudy 52%
RAIN
.1–.25 in
0% Thunder
( 11% severe)
SSE   15 58% 47°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 15 hours 2 PM 64° 63° Mostly Cloudy S   13 56% 48°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 18 hours 5 PM 63° 63° Mostly Cloudy 70%
RAIN
.01–.1 in
0% Thunder
( 12% severe)
S   6 58% 48°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 21 hours 8 PM 56° 56° Mostly Cloudy   CALM 72% 47°

FRIDAY HARBOR, WA extended weather forecast

BAD DAY
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Low 48° Low 44° Low 44° Low 47° Low 45°
High 61° High 65° High 63° High 63° High 63°
SAN JUAN ISLAND, WA 98250 weather forecast Day 3 SAN JUAN ISLAND, WA 98250 weather forecast Day 4 SAN JUAN ISLAND, WA 98250 weather forecast Day 5 SAN JUAN ISLAND, WA 98250 weather forecast Day 6 SAN JUAN ISLAND, WA 98250 weather forecast Day 7
Overcast
84% Rain
Overcast
72% Rain
Mostly Cloudy
32% Rain
Overcast
29% Rain
Mostly Cloudy
30% Rain
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