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Foster, WA Weather Forecast
Foster, WA Weather Forecast Dated: 916 AM Sun Sep 13 2026
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Sunday, September 13, 2026
Mid-Morning
49°F 10°C
Light Rain
Mid-Afternoon
52°F 11°C
Light Showers
Early-Evening
54°F 12°C
Scattered Showers
Brisk around 52°F 11°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
54°F 12°C
Scattered Showers
Mid-Afternoon
65°F 19°C
Sunny
Early-Evening
59°F 15°C
Sunny
Mildly cool near 65°F 19°C, scattered downpours possible, with lower humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
50°F 10°C
Overcast
Mid-Afternoon
65°F 18°C
Cloudy
Early-Evening
61°F 16°C
Partly Cloudy
Comfortable at 65°F 18°C, overcast through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Wednesday, September 16, 2026
Mid-Morning
54°F 12°C
Sunny
Mid-Afternoon
78°F 26°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild temperatures up to 78°F 26°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Thursday, September 17, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
81°F 27°C
Sunny
Early-Evening
70°F 21°C
Sunny
Very warm with a high of 81°F 27°C, sunny throughout the day, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
58°F 14°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
66°F 19°C
Sunny
Pleasant near 77°F 25°C, sunny throughout the day, with lower humidity and steady pressure.
Saturday, September 19, 2026
Mid-Morning
58°F 15°C
Cloudy
Mid-Afternoon
78°F 25°C
Overcast
Early-Evening
67°F 20°C
Overcast
Comfortable with temperatures reaching 78°F 25°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Sunday, September 20, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
67°F 20°C
Sunny
Enjoyable around 78°F 25°C, sunny throughout the day, with lower humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
56°F 14°C
Partly Cloudy
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
65°F 19°C
Sunny
Mild temperatures up to 78°F 25°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
78°F 26°C
Sunny
Early-Evening
67°F 20°C
Sunny
Mild with a high of 78°F 26°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Wednesday, September 23, 2026
Mid-Morning
57°F 14°C
Partly Cloudy
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
65°F 18°C
Overcast
Pleasant near 77°F 25°C, partly cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure.
Thursday, September 24, 2026
Mid-Morning
56°F 14°C
Overcast
Mid-Afternoon
56°F 14°C
Light Showers
Early-Evening
54°F 12°C
Fog
Crisp with a high near 56°F 14°C, dry early, with showers developing in the afternoon, with steady humidity and barometric pressure rising.
Friday, September 25, 2026
Mid-Morning
53°F 12°C
Scattered Showers
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
58°F 15°C
Cloudy
Refreshing around 64°F 18°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
50°F 10°C
Light Showers
Mid-Afternoon
50°F 10°C
Light Fog
Early-Evening
50°F 10°C
Light Showers
Cool and brisk at 50°F 10°C, early showers and late showers with a lull during the afternoon, with steady humidity and steady pressure.
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