Island County, WA Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Island County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny. High near 72, with temperatures falling to around 68 in the afternoon. West wind 6 to 9 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
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
- Jul 16 to Jul 22, 2026
- Latest sync
- Jul 16, 2026 9:08 AM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Island County
Sunday looks like the warmest upcoming period in Island County at 73 degrees F.
Tonight is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Friday Night at about 7 to 13 mph W.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 16, 2026 9:08 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
Rain showers likely before 8pm. Mostly cloudy, with a low around 54. South southwest wind 1 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 70. South southwest wind 5 to 10 mph.
Partly cloudy, with a low around 54. West wind 7 to 13 mph.
Mostly sunny, with a high near 70. West wind 7 to 13 mph.
Mostly clear, with a low around 54.
Sunny, with a high near 73.
Mostly clear, with a low around 55.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 57.
Mostly sunny, with a high near 70.
Mostly clear, with a low around 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 16
|
Showers And Thunderstorms Likely
|
72°F |
6 to 9 mph
W
|
|
Tonight
Jul 16
|
Rain Showers Likely then Mostly Cloudy
|
54°F |
1 to 9 mph
SSW
|
|
Friday
Jul 17
|
Mostly Sunny
|
70°F |
5 to 10 mph
SSW
|
|
Friday Night
Jul 17
|
Partly Cloudy
|
54°F |
7 to 13 mph
W
|
|
Saturday
Jul 18
|
Mostly Sunny
|
70°F |
7 to 13 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
54°F |
3 to 13 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
73°F |
3 to 9 mph
WNW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
55°F |
3 to 8 mph
WNW
|
|
Monday
Jul 20
|
Mostly Sunny
|
70°F |
3 to 9 mph
WNW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
56°F |
2 to 8 mph
WSW
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
71°F |
2 to 8 mph
SW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
57°F |
2 to 8 mph
WSW
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
70°F |
2 to 9 mph
SW
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
56°F |
2 to 9 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.
