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Foster, WA Weather Forecast

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Foster, WA Weather Forecast

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Foster WA weather - Clear - 59°F
Clear
59°F
Updated 12:02 am
Feels Like 52°F
Humidity 87%
Wind SSW 3 mph
Barometer  30.09 in
Dew Point 55°F
Foster WA weather - Clear - 15°C
Clear
15°C
Updated 12:02 am
Feels Like 11°C
Humidity 87%
Wind SSW 5 km/h
Barometer  101.8 kPa
Dew Point 13°C
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Foster Weather Forecast

TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Foster, WA Weather - Tonight Clear Foster, WA Weather - Friday Sunny Foster, WA Weather - Friday Night Mostly Clear Foster, WA Weather - Saturday Mostly Sunny Foster, WA Weather - Saturday Night Mostly Clear Foster, WA Weather - Sunday Sunny Foster, WA Weather - Sunday Night Mostly Clear Foster, WA Weather - Monday Partly Sunny Foster, WA Weather - Monday Night Partly Cloudy Foster, WA Weather - Tuesday Chance Of Rain Foster, WA Weather - Tuesday Night Partly Cloudy Foster, WA Weather - Wednesday Partly Sunny
Clear Sunny Mostly Clear Mostly Sunny Mostly Clear Sunny Mostly Clear Partly Sunny Partly Cloudy Chance of Rain Partly Cloudy Partly Sunny
Lo: 50°FLo: 10°C Hi: 73°FHi: 23°C
 Lo: 50°FLo: 10°C Hi: 73°FHi: 23°C
 Lo: 50°FLo: 10°C Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 71°FHi: 22°C
 Lo: 50°FLo: 10°C Hi: 67°FHi: 19°C
 Lo: 47°FLo: 8°C Hi: 69°FHi: 21°C
POP = Probability of Precipitation.
Weather Outlook Updated: 236 PM PDT Thu Sep 17 2026 Foster, WA Weather - WeatherWorld.com

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Issued: 809 PM PDT Thu Sep 17 2026

Aviation

... Light and variable flow aloft turning northerly later this evening as an upper-ridge builds into the region. VFR area wide this evening. Low- level flow will turn onshore tonight as a push of marine stratus and areas of fog will move in (LIFR/IFR). The activity will start along the coast by 04-06z Friday and spread towards the inland terminals between 08-14z. Any lingering stratus should burn off to a return of VFR by 20-21z but will remain stubborn along the coast. More low stratus ...