Sunnyside, Oregon Weather
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Click for Extreme Heat Warning for Sunnyside, Oregon
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Weather Forecast for Sunnyside, Oregon : Umatilla County
Issued: 10:50 am PDT Sep 4, 2025 Latitude: 45.9623571 Longitude: -118.4021893 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Smoke on Today Smoke on Tonight Smoke on Friday Mostly Sunny on Saturday 30% chance of rain on Sunday 40% chance of on Monday 20% chance of rain on Tuesday 20% chance of on Wednesday
High: 98°F Low: 65°F High: 97°F High: 91°F High: 87°F High: 78°F High: 75°F High: 75°F
Low: 65°F Low: 64°F Low: 60°F Low: 57°F Low: 54°F  
Smoke Smoke Smoke Mostly Sunny Rain Partly Sunny Rain Partly Sunny
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Current Conditions at
WALLA WALLA - (KALW)
86°
Clear
as of 9:53 AM PDST
Rel. Humidity: 25%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
9 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
PENDLETON - (KPDT)
79°
Clear
as of 9:53 AM PDST
Rel. Humidity: 29%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: VFR
Wind Data
3 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
LEWISTON - (KLWS)
73°
Clear
as of 9:56 AM PDST
Rel. Humidity: 38%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Smoke on Today Today... Widespread haze after 11am. Areas of smoke after 2pm. Mostly sunny and hot, with a high near 98. Southwest wind around 7 mph becoming northwest in the afternoon.
Smoke on Tonight Tonight... Areas of smoke. Mostly clear, with a low around 65. Northwest wind around 6 mph becoming south in the evening.
Smoke on Friday Friday... Areas of smoke. Sunny, with a high near 97. Light and variable wind becoming northwest around 6 mph in the afternoon.
Smoke on Friday Night Friday Night... Areas of smoke before 8pm. Mostly clear, with a low around 65. North wind 5 to 7 mph becoming southeast after midnight.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 91. South wind around 6 mph becoming west in the afternoon.
20% chance of rain Saturday Night Saturday Night... A 20 percent chance of showers. Mostly cloudy, with a low around 64.
30% chance of rain Sunday Sunday... A 30 percent chance of showers, mainly after 11am. Mostly sunny, with a high near 87.
30% chance of rain Sunday Night Sunday Night... A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 60.
40% chance of Monday Monday... A 40 percent chance of showers. Partly sunny, with a high near 78.
20% chance of rain Monday Night Monday Night... A chance of showers. Mostly cloudy, with a low around 57.
20% chance of rain Tuesday Tuesday... A chance of showers. Mostly cloudy, with a high near 75.
20% chance of rain Tuesday Night Tuesday Night... A chance of showers. Mostly cloudy, with a low around 54.
20% chance of Wednesday Wednesday... A chance of showers. Partly sunny, with a high near 75.
Current Radar Image


Sun Almanac for Sunnyside, Oregon
Sunrise: 06:19 AM
Sunset: 7:26 PM
Civil Sunrise:05:48 AM
Civil Sunset: 7:56 PM
Nautical Sunrise: 05:12 AM
Nautical Sunset: 8:33 PM
Astro Sunrise: 04:33 AM
Astro Sunset: 9:12 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.