Island County, WA Weather Forecast
County weather hub
Sunny
Compare major city weather across Island County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 54. South southwest wind around 7 mph.
County Weather Overview
This county weather page brings together forecast coverage for Island County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Island County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 16 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 11:56 AM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Island County
Monday looks like the warmest upcoming period in Island County at 61 degrees F.
Tonight is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Wednesday at about 6 to 12 mph W.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 11:56 AM PDT
- Coverage
- 8 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 42. West wind 5 to 9 mph.
Partly sunny, with a high near 55. South southeast wind around 5 mph.
Mostly cloudy, with a low around 42. North wind around 5 mph.
A slight chance of rain after 5pm. Mostly cloudy, with a high near 60. East southeast wind 2 to 6 mph. Chance of precipitation is 20%.
A chance of rain. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
A chance of rain before 5pm. Mostly cloudy, with a high near 60.
Mostly cloudy, with a low around 48.
A slight chance of rain after 5pm. Partly sunny, with a high near 61.
A slight chance of rain. Mostly cloudy, with a low around 48.
A chance of rain. Partly sunny, with a high near 58.
A chance of rain. Mostly cloudy, with a low around 47.
A chance of rain before 5pm. Partly sunny, with a high near 56.
Partly cloudy, with a low around 44.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Apr 16
|
Sunny
|
54°F |
7 mph
SSW
|
|
Tonight
Apr 16
|
Partly Cloudy
|
42°F |
5 to 9 mph
W
|
|
Friday
Apr 17
|
Partly Sunny
|
55°F |
5 mph
SSE
|
|
Friday Night
Apr 17
|
Mostly Cloudy
|
42°F |
5 mph
N
|
|
Saturday
Apr 18
|
Mostly Cloudy then Slight Chance Light Rain
|
60°F |
2 to 6 mph
ESE
|
|
Saturday Night
Apr 18
|
Chance Light Rain
|
48°F |
6 mph
WSW
|
|
Sunday
Apr 19
|
Chance Light Rain
|
60°F |
6 to 9 mph
N
|
|
Sunday Night
Apr 19
|
Mostly Cloudy
|
48°F |
7 mph
WNW
|
|
Monday
Apr 20
|
Partly Sunny then Slight Chance Light Rain
|
61°F |
5 to 9 mph
NW
|
|
Monday Night
Apr 20
|
Slight Chance Light Rain
|
48°F |
7 mph
W
|
|
Tuesday
Apr 21
|
Chance Light Rain
|
58°F |
7 mph
SW
|
|
Tuesday Night
Apr 21
|
Chance Light Rain
|
47°F |
7 mph
WSW
|
|
Wednesday
Apr 22
|
Chance Light Rain
|
56°F |
6 to 12 mph
W
|
|
Wednesday Night
Apr 22
|
Partly Cloudy
|
44°F |
6 to 12 mph
W
|
Major City Forecasts
Live forecast snapshots for major cities across Island County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Island County.
Largest mapped city population in this region: 23,643.
