Weather forecast for 10 daysSunnyside, OR

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 68°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 7mphN 9°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
On Sunday, in Sunnyside, moderate cloud cover will mix with sunshine throughout the day.
The highest temperature will be an agreeable 68°F, while the lowest temperature will be a brisk 46.4°F.
Temperatures are trending warmer, with a peak resembling September's average maximum rather than October's seasonal high.
Sunrise will be at 7:30 am and sunset at 6:19 pm; tomorrow's daylight will last for 10h and 49min.

10-day overview

Daily temperatures

Warmest period: Tuesday - Wednesday 72°C.
Coldest day: Saturday 24.10. 57°C.

Chance of precipitation

Highest chance: Saturday 24.10. 33%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 6mphNNE 13°
  • Humidity: 77%
  • UV index: 0
  • Sunrise: 7:29 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 68°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 7mphN 9°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 63°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 4mphSSE 164°
  • Humidity: 62%
  • UV index: 2
  • Sunrise: 7:32 am PDT
  • Sunset: 6:17 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 9mphNNE 31°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 72°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphNNE 22°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:34 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 61°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 6mphSSW 208°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 7:36 am PDT
  • Sunset: 6:12 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 5mphSSW 210°
  • Humidity: 70%
  • UV index: 3
  • Sunrise: 7:37 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 57°F
  • 43°F
PM Showers
PM Showers
  • Precip. probability: 33%
  • Precipitation: 0.16"
  • Wind: 5mphE 79°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 7:39 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 59°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 6mphENE 71°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 7:40 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 5mphE 91°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 7:41 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
Models point to a combination of primarily gloomy and occasionally mostly clear and wet weather is forecasted.
With a probability of 33%, rainfall is predicted only for next Saturday. Expected precipitation will be light at 0.16".
The temperature will vary considerably in the upcoming period. The maximum temperature will vary between 57.2°F and 71.6°F, while the lowest temperature will be between 39.2°F and 46.4°F.
Tuesday and Wednesday, with the highest temperature of 71.6°F, will be the warmest days; the lowest daytime temperature of the period will be reached on next Saturday, peaking at 57.2°F.
Updated: Oct 18, 2026 @ 00:08:09 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, high-altitude clouds may scatter across the sky, but the sun will still shine.

Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 46.4°F.
The maximum temperature tomorrow will be a few degrees higher than the average highest temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Sunnyside, sunrise will be at 7:30 am and sunset at 6:19 pm (PDT).

Tomorrow, the daylight will last for 10h and 49min.