SAN JUAN ISLAND, WA 98250 Weather Forecast & Current Conditions

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FRIDAY HARBOR, WA
Current Weather

7:53 AM PDT AUG 23, 2026
Overcast
55°F
Feels Like: 54°F
Dewpoint: 55°F
Rel. Hum.: 100%
Visibility: 10 miles
Wind: SSE at 5 mph
Pressure: 30.10 inches
Last 72 hours

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SAN JUAN ISLAND, WA 98250
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy with a chance of showers and a slight chance of thunderstorms in the morning, then mostly sunny in the afternoon. Highs in the mid 60s to lower 70s. South wind 10 to 15 mph.
TONIGHT
Mostly clear. Lows in the 50s. South wind around 10 mph in the evening becoming light.
MONDAY
Mostly sunny. Highs in the upper 60s to mid 70s. North wind around 10 mph becoming northwest in the afternoon.
MONDAY NIGHT
Mostly clear. Lows in the 50s. Northwest wind to 10 mph in the evening becoming light.
TUESDAY
Sunny. Highs in the 70s. Light wind.
TUESDAY NIGHT
Partly cloudy. Lows in the lower to mid 50s.
WEDNESDAY
Mostly sunny. Highs near 70.
WEDNESDAY NIGHT
Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s.
THURSDAY
Mostly cloudy. Highs near 70.
THURSDAY NIGHT
Partly cloudy. Lows in the lower to mid 50s.
FRIDAY
Mostly sunny. Highs in the mid to upper 60s.
FRIDAY NIGHT
Mostly clear. Lows near 50.
SATURDAY
Mostly sunny. Highs in the mid to upper 60s.

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  8/22/2026
Sunday
23 AUG 2026
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 0 hours 11 PM 57° 57° Mostly Cloudy 27%
RAIN
<.01 in
0% Thunder
( 9% severe)
SW   3 83% 52°
Low 53° SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 3 hours 2 AM 54° 54° Mostly Cloudy SSW   3 93% 52°
High 70° SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 6 hours 5 AM 54° 53° Mostly Cloudy 16%
RAIN
<.01 in
0% Thunder
( 2% severe)
SSW   5 93% 52°

Mostly Cloudy



SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 9 hours 8 AM 57° 56° Mostly Cloudy SSW   7 90% 54°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 12 hours 11 AM 63° 62° Mostly Cloudy 3%

0% Thunder
( 1% severe)
S   9 75% 55°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 15 hours 2 PM 68° 68° Partly Cloudy S   10 63% 55°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 18 hours 5 PM 69° 69° Clear 3%

0% Thunder
( 0% severe)
SSW   8 61% 55°
SAN JUAN ISLAND, WA 98250 weather forecast Day 1, 21 hours 8 PM 61° 62° Partly Cloudy SSW   3 78% 54°
Monday
24 AUG 2026
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 0 hours 11 PM 54° 54° Partly Cloudy 2%

0% Thunder
( 0% severe)
  CALM 93% 52°
Low 51° SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 3 hours 2 AM 52° 52° Partly Cloudy   CALM 100% 52°
High 73° SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 6 hours 5 AM 52° 52° Partly Cloudy 0%

0% Thunder
( 0% severe)
  CALM 100% 52°

Partly Cloudy



SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 9 hours 8 AM 56° 56° Partly Cloudy NNW   2 96% 55°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 12 hours 11 AM 65° 65° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   8 73% 56°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 15 hours 2 PM 71° 71° Clear NNW   9 59% 56°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 18 hours 5 PM 72° 72° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   7 55% 55°
SAN JUAN ISLAND, WA 98250 weather forecast Day 2, 21 hours 8 PM 64° 66° Partly Cloudy   CALM 70% 54°

FRIDAY HARBOR, WA extended weather forecast

Tuesday
25 AUG 2026
Wednesday
26 AUG 2026
Thursday
27 AUG 2026
Friday
28 AUG 2026
Saturday
29 AUG 2026
Low 52° Low 53° Low 52° Low 50° Low 48°
High 78° High 72° High 70° High 71° High 69°
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
Clear
3% Rain
Partly Cloudy
9% Rain
Overcast
29% Rain
Partly Cloudy
18% Rain
Partly Cloudy
20% Rain
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