National Weather Service Forecast for: Hermiston OR
Issued by: National Weather Service Pendleton, OR
Updated: 3:01 pm PDT Sep 12, 2026
 
This
Afternoon
This Afternoon: A 30 percent chance of showers after 5pm. Partly sunny, with a high near 80. North wind around 8 mph.
Chance
Showers
 Tonight

Tonight: Showers likely and possibly a thunderstorm, then showers after 11pm. Low around 51. Northwest wind 10 to 18 mph becoming southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Showers

 Sunday

Sunday: Showers likely, mainly between 11am and 5pm. Mostly cloudy, with a high near 65. Southwest wind 17 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Showers
Likely
 Sunday
Night
Sunday Night: A 20 percent chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 50. Southwest wind 11 to 15 mph, with gusts as high as 28 mph.
Slight Chance
Showers then
Mostly Clear
 Monday

Monday: Sunny, with a high near 73. West wind 9 to 13 mph, with gusts as high as 23 mph.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 47.
Mostly Clear

 Tuesday

Tuesday: Mostly sunny, with a high near 73.
Mostly Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 48.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 78.
Sunny
Hi 80 °F Lo 51 °F Hi 65 °F Lo 50 °F Hi 73 °F Lo 47 °F Hi 73 °F Lo 48 °F Hi 78 °F

 

This Afternoon
 
 A 30 percent chance of showers after 5pm. Partly sunny, with a high near 80. North wind around 8 mph.
Tonight
 
 Showers likely and possibly a thunderstorm, then showers after 11pm. Low around 51. Northwest wind 10 to 18 mph becoming southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
 
 Showers likely, mainly between 11am and 5pm. Mostly cloudy, with a high near 65. Southwest wind 17 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
 
 A 20 percent chance of showers before 8pm. Cloudy during the early evening, then gradual clearing, with a low around 50. Southwest wind 11 to 15 mph, with gusts as high as 28 mph.
Monday
 
 Sunny, with a high near 73. West wind 9 to 13 mph, with gusts as high as 23 mph.
Monday Night
 
 Mostly clear, with a low around 47.
Tuesday
 
 Mostly sunny, with a high near 73.
Tuesday Night
 
 Mostly clear, with a low around 48.
Wednesday
 
 Sunny, with a high near 78.
Wednesday Night
 
 Clear, with a low around 50.
Thursday
 
 Sunny, with a high near 81.
Thursday Night
 
 Clear, with a low around 51.
Friday
 
 Sunny, with a high near 84.
Friday Night
 
 Mostly clear, with a low around 54.
Saturday
 
 Sunny, with a high near 84.

 

Forecast from NOAA-NWS for Hermiston OR.