Sumner, WA 14 Day Weather - 98352 WeatherWorld.com
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Sumner, WA Weather Forecast


Sumner, WA Weather Forecast Dated: 549 PM Wed Sep 02 2026 (Sumner Time)
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Wednesday, September 2, 2026
Mid-Morning
64°F 18°C
Overcast
Mid-Afternoon
66°F 19°C
Light Rain
Early-Evening
57°F 14°C
Rain
Refreshing around 66°F 19°C, drier morning followed by showers lasting through evening, with increasing humidity and steady pressure.
Thursday, September 3, 2026
Mid-Morning
50°F 10°C
Light Showers
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
60°F 16°C
Overcast
Mildly cool near 64°F 18°C, scattered downpours possible, with lower humidity and steady pressure.
Friday, September 4, 2026
Mid-Morning
55°F 13°C
Partly Cloudy
Mid-Afternoon
64°F 18°C
Overcast
Early-Evening
61°F 16°C
Scattered Showers
Comfortable at 64°F 18°C, locally heavy downpours at times, with lower humidity and steady pressure.
Saturday, September 5, 2026
Mid-Morning
54°F 12°C
Overcast
Mid-Afternoon
66°F 19°C
Overcast
Early-Evening
59°F 15°C
Overcast
Cool with a high near 66°F 19°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Sunday, September 6, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
70°F 21°C
Partly Cloudy
Early-Evening
66°F 19°C
Sunny
Mild with a high of 70°F 21°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Monday, September 7, 2026
Mid-Morning
59°F 15°C
Sunny
Mid-Afternoon
76°F 25°C
Sunny
Early-Evening
68°F 20°C
Sunny
Pleasant near 76°F 25°C, sunny throughout the day, with lower humidity and steady pressure.
Tuesday, September 8, 2026
Mid-Morning
58°F 15°C
Sunny
Mid-Afternoon
76°F 24°C
Sunny
Early-Evening
67°F 20°C
Sunny
Comfortable with temperatures reaching 76°F 24°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the WSW to the W at 5 mph 8 km/h.
Wednesday, September 9, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
83°F 28°C
Sunny
Early-Evening
72°F 23°C
Sunny
Quite warm around 83°F 28°C, sunny throughout the day, with lower humidity and barometric pressure falling.
Thursday, September 10, 2026
Mid-Morning
61°F 16°C
Overcast
Mid-Afternoon
70°F 21°C
Overcast
Early-Evening
62°F 17°C
Scattered Showers
Mild temperatures up to 70°F 21°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds blowing from the SW at 12 mph 19 km/h. Gusts up to 22 mph 36 km/h.
Friday, September 11, 2026
Mid-Morning
55°F 13°C
Scattered Showers
Mid-Afternoon
61°F 16°C
Light Showers
Early-Evening
57°F 14°C
Scattered Showers
Mildly cool near 61°F 16°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Saturday, September 12, 2026
Mid-Morning
53°F 11°C
Scattered Showers
Mid-Afternoon
61°F 16°C
Scattered Showers
Early-Evening
59°F 15°C
Cloudy
Comfortable at 61°F 16°C, scattered downpours possible, with lower humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
53°F 12°C
Sunny
Mid-Afternoon
68°F 20°C
Sunny
Early-Evening
63°F 17°C
Sunny
Comfortable with temperatures reaching 68°F 20°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
56°F 13°C
Sunny
Mid-Afternoon
74°F 24°C
Partly Cloudy
Early-Evening
67°F 19°C
Sunny
Enjoyable around 74°F 24°C, partly cloudy throughout the day, with lower humidity and steady pressure.
Tuesday, September 15, 2026
Mid-Morning
62°F 16°C
Sunny
Mid-Afternoon
82°F 28°C
Sunny
Early-Evening
72°F 22°C
Sunny
Warm temperatures up to 82°F 28°C, sunny throughout the day, with lower humidity and steady pressure.
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