National Weather Service Forecast for: Hermiston OR
Issued by: National Weather Service Pendleton, OR
Updated: 4:01 am PDT May 26, 2026
 
Today

Today: A chance of showers before 11am, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 66. Southwest wind 5 to 10 mph becoming light and variable in the afternoon. Chance of precipitation is 30%.
Chance
Showers

 Tonight

Tonight: A 50 percent chance of showers, mainly after 8pm. Cloudy, with a low around 48. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers

 Wednesday

Wednesday: Mostly sunny, with a high near 81. Light and variable wind.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming light and variable in the evening.
Partly Cloudy

 Thursday

Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.
Slight Chance
Showers then
Chance
T-storms
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Showers
Likely

 Friday

Friday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy.
Chance
Showers and
Breezy
 Friday
Night
Friday Night: Mostly cloudy, with a low around 45. Breezy.
Partly Cloudy
and Breezy
then Mostly
Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 72.
Mostly Sunny
Hi 66 °F Lo 48 °F Hi 81 °F Lo 54 °F Hi 87 °F Lo 53 °F Hi 73 °F Lo 45 °F Hi 72 °F

 

Today
 
 A chance of showers before 11am, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 66. Southwest wind 5 to 10 mph becoming light and variable in the afternoon. Chance of precipitation is 30%.
Tonight
 
 A 50 percent chance of showers, mainly after 8pm. Cloudy, with a low around 48. South wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
 
 Mostly sunny, with a high near 81. Light and variable wind.
Wednesday Night
 
 Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming light and variable in the evening.
Thursday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
 
 Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Friday
 
 A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy.
Friday Night
 
 Mostly cloudy, with a low around 45. Breezy.
Saturday
 
 Mostly sunny, with a high near 72.
Saturday Night
 
 Mostly clear, with a low around 44.
Sunday
 
 Sunny, with a high near 74.
Sunday Night
 
 Mostly clear, with a low around 46.
Monday
 
 Sunny, with a high near 83.

 

Forecast from NOAA-NWS for Hermiston OR.