National Weather Service Forecast for: Dallas OR
Issued by: National Weather Service Portland, OR
Updated: 2:01 am PDT Jun 22, 2026
 
Overnight

Overnight: Mostly clear, with a low around 55. Calm wind.
Mostly Clear
Monday

Monday: Sunny, with a high near 90. Calm wind becoming north 5 to 7 mph in the morning.
Sunny
Monday
Night
Monday Night: Increasing clouds, with a low around 60. North wind 5 to 7 mph becoming calm  after midnight.
Increasing
Clouds
Tuesday

Tuesday: Partly sunny, then gradually becoming sunny, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.
Becoming
Sunny
Tuesday
Night
Tuesday Night: Mostly clear, with a low around 59. West northwest wind 5 to 10 mph becoming light  after midnight. Winds could gust as high as 18 mph.
Mostly Clear
Wednesday

Wednesday: Sunny, with a high near 88.
Sunny
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 54.
Partly Cloudy
Thursday

Thursday: Partly sunny, with a high near 77.
Partly Sunny
Thursday
Night
Thursday Night: Rain.  Mostly cloudy, with a low around 54.
Rain
Lo 55 °F Hi 90 °F Lo 60 °F Hi 92 °F Lo 59 °F Hi 88 °F Lo 54 °F Hi 77 °F Lo 54 °F

Heat Advisory
 

Overnight
 
Mostly clear, with a low around 55. Calm wind.
Monday
 
Sunny, with a high near 90. Calm wind becoming north 5 to 7 mph in the morning.
Monday Night
 
Increasing clouds, with a low around 60. North wind 5 to 7 mph becoming calm after midnight.
Tuesday
 
Partly sunny, then gradually becoming sunny, with a high near 92. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
 
Mostly clear, with a low around 59. West northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 18 mph.
Wednesday
 
Sunny, with a high near 88.
Wednesday Night
 
Partly cloudy, with a low around 54.
Thursday
 
Partly sunny, with a high near 77.
Thursday Night
 
Rain. Mostly cloudy, with a low around 54.
Friday
 
A chance of rain. Mostly cloudy, with a high near 65.
Friday Night
 
A chance of rain. Mostly cloudy, with a low around 52.
Saturday
 
Rain likely. Partly sunny, with a high near 65.
Saturday Night
 
A slight chance of rain. Partly cloudy, with a low around 50.
Sunday
 
A slight chance of rain. Partly sunny, with a high near 68.

 

Forecast from NOAA-NWS for Dallas OR.