Riverside, Oregon Weather
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Click for Extreme Heat Warning for Riverside, Oregon
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Weather Forecast for Riverside, Oregon : Umatilla County
Issued: 10:50 am PDT Sep 4, 2025 Latitude: 45.675188 Longitude: -118.737294 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 20% chance of on Saturday 30% chance of thunderstorms on Sunday 40% chance of on Monday 20% chance of rain on Tuesday 20% chance of on Wednesday
High: 98°F Low: 63°F High: 95°F High: 91°F High: 86°F High: 77°F High: 74°F High: 75°F
Low: 63°F Low: 60°F Low: 57°F Low: 53°F Low: 51°F  
Smoke Smoke Smoke Partly Sunny Thunderstorms Partly Sunny Rain Partly Sunny
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Current Conditions at
PENDLETON - (KPDT)
84°
Clear
as of 10:53 AM PDST
Rel. Humidity: 26%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
3 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
HERMISTON - (KHRI)
90°
Clear
as of 10:53 AM PDST
Rel. Humidity: 29%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.86 in.
Flight Rule: VFR
Wind Data
8 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
WALLA WALLA - (KALW)
88°
Clear
as of 10:53 AM PDST
Rel. Humidity: 25%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: VFR
Wind Data
8 MPH
210° Southwest
Cloud Level(s): Clear
Smoke on Today Today... Widespread haze. Patchy smoke between 2pm and 5pm. Mostly sunny and hot, with a high near 98. Northwest wind around 8 mph.
Smoke on Tonight Tonight... Widespread haze. Patchy smoke between 8pm and 11pm. Mostly clear, with a low around 63. North wind 5 to 7 mph becoming light and variable in the evening.
Smoke on Friday Friday... Widespread haze before 2pm. Patchy smoke after 11am. Sunny, with a high near 95. Calm wind becoming north 5 to 7 mph in the afternoon.
Smoke on Friday Night Friday Night... Areas of smoke before 8pm. Mostly clear, with a low around 63. North wind 5 to 8 mph becoming calm in the evening.
20% chance of Saturday Saturday... A 20 percent chance of showers after 11am. Partly sunny, with a high near 91. Calm wind becoming northwest 5 to 7 mph in the afternoon.
30% chance of rain Saturday Night Saturday Night... A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 60.
30% chance of thunderstorms Sunday Sunday... A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
30% chance of rain Sunday Night Sunday Night... A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 57.
40% chance of Monday Monday... A 40 percent chance of showers. Partly sunny, with a high near 77.
20% chance of rain Monday Night Monday Night... A chance of showers. Mostly cloudy, with a low around 53.
20% chance of rain Tuesday Tuesday... A chance of showers. Mostly cloudy, with a high near 74.
20% chance of rain Tuesday Night Tuesday Night... A chance of showers. Mostly cloudy, with a low around 51.
20% chance of Wednesday Wednesday... A chance of showers. Partly sunny, with a high near 75.
Current Radar Image


Sun Almanac for Riverside, Oregon
Sunrise: 06:21 AM
Sunset: 7:27 PM
Civil Sunrise:05:50 AM
Civil Sunset: 7:57 PM
Nautical Sunrise: 05:14 AM
Nautical Sunset: 8:34 PM
Astro Sunrise: 04:35 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.