Weather forecast for 10 daysSumner, WA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 64°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphW 259°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:17 pm PDT
  • ▼
On Saturday, October 17, expect partly sunny skies with periods of cloudiness.
The temperature variation is forecasted to range from a maximum of an enjoyable 64.4°F to a minimum of a cold 41°F.
Expect a warmer feel as the forecasted high matches September's 68.9°F, rather than October's average of 57.4°F.
Sunrise was at 7:30 am and sunset will be at 6:17 pm; the daylight will last for 10h and 47min.

Sunday Oct 18, 2026

  • 61°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 4mphN 6°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 7:32 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
Tomorrow, on Sunday, sunlight and clouds will take turns dominating the sky.
Temperatures are forecasted to peak at a breezy 60.8°F and drop to a minimum of a frosty 44.6°F.
The high is predicted to coincide with October's normal of 57.4°F.
Sunrise will be at 7:32 am and sunset at 6:15 pm; tomorrow's daylight will last for 10h and 44min.

10-day overview

Daily temperatures

Warmest day: Wednesday 66°C.
Coldest period: Friday - Monday 57°C.

Chance of precipitation

Highest chance: Monday 26.10. 31%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 64°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 7mphW 259°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:17 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 61°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 4mphN 6°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 7:32 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 61°F
  • 43°F
Cloudy
Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 1mphW 276°
  • Humidity: 73%
  • UV index: 2
  • Sunrise: 7:33 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 63°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 5mphN 9°
  • Humidity: 74%
  • UV index: 3
  • Sunrise: 7:34 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 1mphNNW 330°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 7:36 am PDT
  • Sunset: 6:10 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 59°F
  • 45°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.08"
  • Wind: 2mphWSW 244°
  • Humidity: 80%
  • UV index: 2
  • Sunrise: 7:37 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 57°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • Wind: 4mphSW 235°
  • Humidity: 75%
  • UV index: 2
  • Sunrise: 7:39 am PDT
  • Sunset: 6:07 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 57°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 4mphNNE 25°
  • Humidity: 78%
  • UV index: 2
  • Sunrise: 7:40 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 57°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 23%
  • Precipitation: 0.04"
  • Wind: 4mphNNE 16°
  • Humidity: 74%
  • UV index: 2
  • Sunrise: 7:42 am PDT
  • Sunset: 6:03 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 57°F
  • 43°F
PM Showers
PM Showers
  • Precip. probability: 31%
  • Precipitation: 0.16"
  • Wind: 2mphWSW 243°
  • Humidity: 77%
  • UV index: 2
  • Sunrise: 7:43 am PDT
  • Sunset: 6:02 pm PDT
  • ▼
Primarily dull and occasionally mostly clear and rain-soaked weather is anticipated.
Rain is expected on Thursday, Friday, next Sunday and Monday.
In the coming days, the maximum temperature will vary between 57.2°F and 66.2°F, while the overnight low will be nearly unchanged, as night temperatures will lie between 41°F and 44.6°F.
Wednesday will be the warmest day, with a maximum temperature of 66.2°F; Friday through next Monday, with the highest temperature of 57.2°F, will be the coldest days.
Updated: Oct 17, 2026 @ 15:04:58 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, a partly cloudy sky is anticipated.

Today, the highest temperature will be 64.4°F, while the lowest temperature will be 41°F.
The highest temperature will be moderately higher than the average maximum of 57.4°F in October. The lowest temperature today will be in line with the average low temperature.

On Saturday, in Sumner, sunrise was at 7:30 am and sunset will be at 6:17 pm (PDT).

Today, the daylight will last for 10h and 47min.

Tomorrow, variable cloud cover will persist, but sunshine will break through.

Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 44.6°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Sumner, sunrise will be at 7:32 am and sunset at 6:15 pm (PDT).

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