Weather for Sunnyside, Washington
Current Weather
Humidity: 85%
Feels Like: 34.1°F
Wind: NW 4.9 mph
Wind Gusts: 7.2 mph
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Wed
H: 47°F
L: 33°F
Thu
H: 42°F
L: 34°F
Fri
H: 45°F
L: 32°F
Sat
H: 42°F
L: 30°F
Sun
H: 40°F
L: 31°F
Air Quality
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 36 μg/m3
Astronomical
Sun Transit: 12:00 AM
Sunset: 4:19 PM
Daylight: 8 hrs 37 mins
Moon Transit: 3:52 PM
Moonset: 9:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM3:22 PM - 5:52 PM
Minor Periods
8:42 PM - 10:12 PM10:14 AM - 11:44 AM
Action Rating: 2 out of 5
Special Weather Statement issued December 22 at 12:08PM PST by NWS Pendleton OR
Effective: Mon December 22, 2025, 12:08 PM
Expires: Thu December 25, 2025, 4:00 AM
...SNOW ALONG MOUNTAINS PASSES WILL AFFECT HOLIDAY TRAVEL THROUGH WEDNESDAY... A return of an active weather pattern with an associated atmospheric river is expected to impact the Cascades, most notably over the Washington Cascades. Moderate rain favored, with amounts between 0.5-1 inch (60-80% confidence) at the Cascade crest with lesser amounts found at the lower elevations. Precipitation over the Cascades will transition to snow this evening as snow levels drop to 2000-3000 feet. Snowfall totals through Wednesday are favored to be 5-7 inches (60-80% confidence). *For current weather conditions, check weather.gov/pendleton *Current road conditions can be found at wsdot.com *Winter driving tips can be found here: weather.gov/safety/winter
Special Weather Statement issued December 23 at 12:39PM PST by NWS Pendleton OR
Effective: Tue December 23, 2025, 12:39 PM
Expires: Wed December 24, 2025, 4:15 PM
...SNOW ALONG MOUNTAINS PASSES WILL AFFECT HOLIDAY TRAVEL THROUGH WEDNESDAY... A return of an active weather pattern with an associated atmospheric river is expected to impact the Cascades, most notably over the Washington Cascades. Moderate rain favored, with amounts between 0.5-1 inch (60-80% confidence) at the Cascade crest with lesser amounts found at the lower elevations. Precipitation over the Cascades will transition to snow this evening as snow levels drop to 2000-3000 feet. Snowfall totals through Wednesday are favored to be 3-5 inches (60-80% confidence). *For current weather conditions, check weather.gov/pendleton *Current road conditions can be found at wsdot.com *Winter driving tips can be found here: weather.gov/safety/winter
Weather Forecast
Average Temperature: 38.9°F
Average Humidity: 88%
Wind: 17.7 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 7.74 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 44.28 μg/m3
Astronomical
Sun Transit: 12:00 AM
Sunset: 4:19 PM
Daylight: 8 hrs 37 mins
Moon Transit: 3:52 PM
Moonset: 9:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM3:22 PM - 5:52 PM
Minor Periods
8:42 PM - 10:12 PM10:14 AM - 11:44 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 37.5°F
Average Humidity: 93%
Wind: 5.4 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 11.53 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 35.44 μg/m3
Astronomical
Sun Transit: 12:00 AM
Sunset: 4:19 PM
Daylight: 8 hrs 37 mins
Moon Transit: 4:36 PM
Moonset: 10:25 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM4:06 PM - 6:36 PM
Minor Periods
9:55 PM - 11:25 PM10:32 AM - 12:02 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 35.8°F
Average Humidity: 89%
Wind: 6.5 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 14.8 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 35.8 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: 34.3°F
Average Humidity: 65%
Wind: 6 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 76.48 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: 33.8°F
Average Humidity: 72%
Wind: 2.9 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 15.92 μg/m3
Sulphur Dioxide: 2.02 μg/m3
Ozone: 37.69 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