Weather forecast for tomorrowSunnyside, OR

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 68°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 7mphN 10°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
Tomorrow, moments of sunshine will break through the patchy clouds.
The expected temperature range extends from a high of a pleasant 68°F to a low of a frosty 46.4°F.
Tomorrow, climate comparisons show a temperature closer to September's 73.6°F than October's 61.3°F.
Sunrise will be at 7:30 am and sunset at 6:19 pm; tomorrow's daylight will last for 10h and 49min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 6 pm 64°C.
Coldest hour: 6 am 41°C.

Chance of precipitation

Highest chance: 6 am 21%.

Hourly weather forecast

  • 12 am
  • 50°F
  • Feels like:
    48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphN 1°
  • Humidity: 80%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 46°F
  • Feels like:
    46°F
Mostly Clear
Mostly Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 3mphN 6°
  • Humidity: 90%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 2mphNE 37°
  • Humidity: 95%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 3mphNE 43°
  • Humidity: 100%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:30 am
  • 8 am
  • 41°F
  • Feels like:
    41°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 3mphNE 37°
  • Humidity: 99%
  • Pressure: 30.15"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 4mphNNE 29°
  • Humidity: 82%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 0°
  • Humidity: 61%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphN 3°
  • Humidity: 46%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 353°
  • Humidity: 37%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNNW 343°
  • Humidity: 41%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:19 pm
  • 8 pm
  • 57°F
  • Feels like:
    57°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphNW 319°
  • Humidity: 55%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphSE 125°
  • Humidity: 64%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily cloudy and occasionally bright weather is forecasted.
The temperature will vary between the lowest temperature of 41°F and the highest temperature of 66.2°F. The warmest part of the day will be at 4 pm and 5 pm.
The temperature tomorrow will feel more alike with September's average high of 73.6°F than the usual for October. The nighttime low tomorrow will be resembling October's typical minimum temperature.
Updated: Oct 17, 2026 @ 18:26:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, intermittent cloud cover is expected, allowing for some sunshine.

Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 46.4°F.
The maximum temperature tomorrow will be relatively higher than the average highest temperature in October. Tomorrow, the lowest temperature 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).

In Sunnyside, tomorrow, there will be 10h and 49min of daylight.