Weather forecast for 10 daysSummit, WA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 64°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphWSW 255°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:31 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
On Saturday, October 17, a pleasant mix of sun and clouds will define the day.
The predicted temperature range extends from a high of a breezy 64.4°F to a low of an icy 39.2°F.
Today, the expected high of 64.4°F is expected to reflect September's average high of 69.6°F.
Sunrise was at 7:31 am and sunset will be at 6:18 pm; the daylight will last for 10h and 47min.

Sunday Oct 18, 2026

  • 61°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 6mphNNE 13°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 7:32 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
Tomorrow, a partly cloudy sky is anticipated.
The temperature variation is predicted to range from a maximum of an enjoyable 60.8°F to a minimum of a brisk 42.8°F.
The highest temperature for tomorrow is expected to reflect October's average of 58.3°F.
Sunrise will be at 7:32 am and sunset at 6:16 pm; tomorrow's daylight will last for 10h and 44min.

10-day overview

Daily temperatures

Maximum temperature: 64°C.
Coldest period: Friday - Monday 57°C.

Chance of precipitation

Highest chance: Saturday - Monday 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 64°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphWSW 255°
  • Humidity: 65%
  • UV index: 3
  • Sunrise: 7:31 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 61°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 6mphNNE 13°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 7:32 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 61°F
  • 41°F
Cloudy
Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 2mphWNW 292°
  • Humidity: 72%
  • UV index: 2
  • Sunrise: 7:33 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 6mphNNE 17°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 7:35 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 64°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 2mphN 355°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 7:36 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 59°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0.04"
  • Wind: 3mphWSW 237°
  • Humidity: 78%
  • UV index: 2
  • Sunrise: 7:38 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 57°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0.04"
  • Wind: 4mphSW 233°
  • Humidity: 73%
  • UV index: 2
  • Sunrise: 7:39 am PDT
  • Sunset: 6:07 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 57°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • Wind: 5mphNNE 29°
  • Humidity: 78%
  • UV index: 2
  • Sunrise: 7:41 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 57°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • Wind: 6mphNNE 24°
  • Humidity: 73%
  • UV index: 2
  • Sunrise: 7:42 am PDT
  • Sunset: 6:04 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 57°F
  • 41°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.12"
  • Wind: 3mphSW 236°
  • Humidity: 76%
  • UV index: 2
  • Sunrise: 7:44 am PDT
  • Sunset: 6:02 pm PDT
  • ▼
For the coming ten days, primarily dull and occasionally sunny weather is forecasted.
Rain is anticipated on Thursday through next Monday.
In the upcoming period, the maximum temperature will vary between 57.2°F and 64.4°F, while the lowest nightly temperature differences will be negligible, as the lowest temperatures will remain in the range of 39.2°F to 42.8°F.
Saturday and Wednesday, with the highest temperature of 64.4°F, will be the warmest days; the coldest days will be Friday through next Monday, with a maximum of 57.2°F.
Updated: Oct 17, 2026 @ 15:04:53 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, scattered clouds may briefly filter the sunlight, but it will remain bright overall.

Today, the maximum temperature in Summit will be 64.4°F, while the minimum temperature will be 39.2°F.
The highest temperature today will be moderately higher than the average maximum temperature in October. The lowest temperature will be also relatively lower than the average low of 43.2°F.

On Saturday, in Summit, sunrise was at 7:31 am and sunset will be at 6:18 pm (PDT).

In Summit, the length of the day today will be 10h and 47min.

On Sunday, changing cloud patterns will allow for periods of sunshine.

Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 42.8°F.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be also in line with the average low of 43.2°F.

On Sunday, in Summit, sunrise will be at 7:32 am and sunset at 6:16 pm (PDT).

In Summit, Washington, the length of the day tomorrow will be 10h and 44min.