Weather for Sunnyside, Washington
Current Weather
Humidity: 97%
Heat Index: 37°F
Feels Like: 35.5°F
Wind: WNW 2.5 mph
Wind Gusts: 7 mph
Wind Chill: 35.5°F
Dew Point: 35.5°F
Chance of Precipitation: 10%
Precipitation: 0.01 in
Cloud Cover: 60%
Visibility: 2 mi
UV Index: 0
Five Day Weather Forecast
Fri
H: 48°F
L: 32°F
Sat
H: 38°F
L: 25°F
Sun
H: 39°F
L: 25°F
Mon
H: 39°F
L: 31°F
Tue
H: 39°F
L: 28°F
Air Quality
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 75 μg/m3
Astronomical
Sun Transit: 12:01 AM
Sunset: 4:20 PM
Daylight: 8 hrs 38 mins
Moon Transit: 12:00 AM
Moonset: 11:37 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:20 AM - 2:50 AM
Minor Periods
12:00 AM - 12:00 AM10:49 AM - 12:19 AM
Action Rating: 2 out of 5
Dense Fog Advisory issued December 26 at 3:22AM PST until December 26 at 10:00AM PST by NWS Pendleton OR
Effective: Fri December 26, 2025, 3:22 AM
Expires: Fri December 26, 2025, 10:00 AM
* WHAT...Visibility less as low as one quarter mile in dense fog. * WHERE...Lower Columbia Basin of Washington. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Winter Weather Advisory issued December 25 at 9:33PM PST until December 27 at 7:00AM PST by NWS Pendleton OR
Effective: Thu December 25, 2025, 9:33 PM
Expires: Fri December 26, 2025, 7:00 AM
* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches. Winds gusting as high as 35 mph. * WHERE...In Oregon, East Slopes of the Oregon Cascades and Northern Blue Mountains of Oregon. In Washington, Upper Slopes of the Eastern Washington Cascades Crest and Northwest Blue Mountains. * WHEN...From 4 AM Friday to 7 AM PST Saturday. * IMPACTS...Significant snowfall with periods of heavy snowfall rates will combine with low visibility to create very difficult driving conditions. Gusty winds could bring down tree branches.
Slow down and use caution while traveling. In Oregon, the latest road conditions can be obtained by visiting tripcheck.com online, or by calling 5 1 1. In Washington, the latest road conditions can be obtained by visiting the website wsdot.wa.gov/travel.
Freezing Fog Advisory issued December 25 at 10:24PM PST until December 26 at 10:00AM PST by NWS Pendleton OR
Effective: Thu December 25, 2025, 10:24 PM
Expires: Fri December 26, 2025, 10:00 AM
* WHAT...Visibility of one half mile or less in freezing fog. * WHERE...Yakima Valley. * WHEN...From 4 AM to 10 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Freezing Fog Advisory issued December 25 at 10:24PM PST until December 26 at 10:00AM PST by NWS Pendleton OR
Effective: Thu December 25, 2025, 10:24 PM
Expires: Fri December 26, 2025, 10:00 AM
* WHAT...Visibility one half mile or less in fog and freezing fog. * WHERE...Kittitas Valley. * WHEN...Until 10 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous. Areas of freezing fog could cause slick roadways and sidewalks.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Winter Weather Advisory issued December 26 at 3:00AM PST until December 27 at 7:00AM PST by NWS Pendleton OR
Effective: Fri December 26, 2025, 3:00 AM
Expires: Fri December 26, 2025, 7:00 PM
* WHAT...Snow expected. Total snow accumulations averaging 5 to 10 inches and locally as high as 12 inches. Winds gusting as high as 35 mph. * WHERE...In Oregon, East Slopes of the Oregon Cascades and Northern Blue Mountains of Oregon. In Washington, Upper Slopes of the Eastern Washington Cascades Crest and Northwest Blue Mountains. * WHEN...Until 7 AM PST Saturday. * IMPACTS...Significant snowfall with periods of heavy snowfall rates will combine with low visibility to create very difficult driving conditions. Gusty winds could bring down tree branches.
Slow down and use caution while traveling. In Oregon, the latest road conditions can be obtained by visiting tripcheck.com online, or by calling 5 1 1. In Washington, the latest road conditions can be obtained by visiting the website wsdot.wa.gov/travel.
Freezing Fog Advisory issued December 26 at 3:22AM PST until December 26 at 10:00AM PST by NWS Pendleton OR
Effective: Fri December 26, 2025, 3:22 AM
Expires: Fri December 26, 2025, 10:00 AM
* WHAT...Visibility one to two miles in freezing fog. * WHERE...Yakima Valley. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Freezing Fog Advisory issued December 26 at 3:22AM PST until December 26 at 10:00AM PST by NWS Pendleton OR
Effective: Fri December 26, 2025, 3:22 AM
Expires: Fri December 26, 2025, 10:00 AM
* WHAT...Visibility one half mile or less in fog and freezing fog. * WHERE...Kittitas Valley. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Weather Forecast
Average Temperature: 35.8°F
Average Humidity: 89%
Wind: 15.2 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 12.08 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 44.68 μg/m3
Astronomical
Sun Transit: 12:01 AM
Sunset: 4:20 PM
Daylight: 8 hrs 38 mins
Moon Transit: 12:00 AM
Moonset: 11:37 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:20 AM - 2:50 AM
Minor Periods
12:00 AM - 12:00 AM10:49 AM - 12:19 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 32°F
Average Humidity: 66%
Wind: 12.5 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 2.84 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 80.28 μg/m3
Astronomical
Sun Transit: 12:01 AM
Sunset: 4:21 PM
Daylight: 8 hrs 38 mins
Moon Transit: 1:23 AM
Moonset: 12:37 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%
Best Times for Fishing or Hunting
Major Periods
12:53 AM - 3:23 AM12:53 AM - 3:23 AM
Minor Periods
11:06 AM - 12:36 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 31.1°F
Average Humidity: 62%
Wind: 5.1 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 5.98 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 56.56 μg/m3
Astronomical
Sun Transit: 12:02 AM
Sunset: 4:22 PM
Daylight: 8 hrs 39 mins
Moon Transit: 6:55 PM
Moonset: 12:53 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%
Best Times for Fishing or Hunting
Major Periods
1:51 AM - 4:21 AM6:25 PM - 8:55 PM
Minor Periods
11:25 AM - 12:55 AM12:23 AM - 1:53 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 33.3°F
Average Humidity: 66%
Wind: 2.9 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 10.39 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 46.32 μg/m3
Astronomical
Sun Transit: 12:02 AM
Sunset: 4:22 PM
Daylight: 8 hrs 39 mins
Moon Transit: 7:47 PM
Moonset: 2:13 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%
Best Times for Fishing or Hunting
Major Periods
2:41 AM - 5:11 AM7:17 PM - 9:47 PM
Minor Periods
11:48 AM - 1:18 PM1:43 AM - 3:13 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 31.2°F
Average Humidity: 71%
Wind: 2.5 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 16.03 μg/m3
Sulphur Dioxide: 1.96 μg/m3
Ozone: 37.54 μg/m3
Astronomical
Sun Transit: 12:03 AM
Sunset: 4:23 PM
Daylight: 8 hrs 40 mins
Moon Transit: 8:45 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%
Best Times for Fishing or Hunting
Major Periods
3:35 AM - 6:05 AM8:15 PM - 10:45 PM
Minor Periods
12:16 AM - 1:46 PM3:06 AM - 4:36 AM
Action Rating: 2 out of 5