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Summit, WA Weather Forecast
Summit, WA Weather Forecast Dated: 431 AM Sun Oct 18 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.
Sunday, October 18, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
62°F 16°C
Cloudy
Early-Evening
51°F 11°C
Overcast
Refreshing around 62°F 16°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling.
Monday, October 19, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
49°F 10°C
Overcast
Mildly cool near 60°F 16°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.
Tuesday, October 20, 2026
Mid-Morning
47°F 8°C
Overcast
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
50°F 10°C
Sunny
Comfortable at 63°F 17°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure.
Wednesday, October 21, 2026
Mid-Morning
47°F 8°C
Sunny
Mid-Afternoon
67°F 20°C
Overcast
Early-Evening
52°F 11°C
Overcast
Cool with a high near 67°F 20°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure.
Thursday, October 22, 2026
Mid-Morning
48°F 9°C
Overcast
Mid-Afternoon
62°F 17°C
Cloudy
Early-Evening
51°F 11°C
Sunny
Refreshing around 62°F 17°C, overcast through the afternoon, turning sunny this evening, with steady humidity and steady pressure.
Friday, October 23, 2026
Mid-Morning
46°F 8°C
Sunny
Mid-Afternoon
58°F 14°C
Sunny
Early-Evening
47°F 9°C
Partly Cloudy
Mildly cool near 58°F 14°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Saturday, October 24, 2026
Mid-Morning
42°F 6°C
Sunny
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
50°F 10°C
Sunny
Comfortable at 59°F 15°C, cloudy through the afternoon, turning sunny this evening, with lower humidity and steady pressure.
Sunday, October 25, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
63°F 17°C
Sunny
Early-Evening
52°F 11°C
Sunny
Cool with a high near 63°F 17°C, sunny throughout the day, with steady humidity and barometric pressure falling.
Monday, October 26, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
50°F 10°C
Sunny
Refreshing around 59°F 15°C, sunny throughout the day, with lower humidity and steady pressure.
Tuesday, October 27, 2026
Mid-Morning
44°F 7°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
52°F 12°C
Clear
Mildly cool near 62°F 17°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Wednesday, October 28, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
61°F 16°C
Sunny
Early-Evening
52°F 11°C
Partly Cloudy
Comfortable at 61°F 16°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.
Thursday, October 29, 2026
Mid-Morning
50°F 10°C
Overcast
Mid-Afternoon
57°F 14°C
Overcast
Early-Evening
54°F 12°C
Overcast
Crisp with a high near 57°F 14°C, overcast throughout the day, with lower humidity and steady pressure.
Friday, October 30, 2026
Mid-Morning
53°F 12°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
57°F 14°C
Overcast
Refreshing around 59°F 15°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the S to the SSW at 11 mph 17 km/h. Gusts up to 21 mph 34 km/h.
Saturday, October 31, 2026
Mid-Morning
55°F 13°C
Drizzle
Mid-Afternoon
52°F 11°C
Scattered Showers
Early-Evening
50°F 11°C
Scattered Showers
Cool and brisk at 52°F 11°C, scattered downpours possible, with increasing humidity and steady pressure. Winds blowing from the SSW at 12 mph 20 km/h.
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