National Weather Service Forecast for: Duncan OK
Issued by: National Weather Service Norman, OK
Updated: 11:32 pm CST Dec 4, 2025
 
Overnight

Overnight: Partly cloudy, with a low around 27. Calm wind becoming south around 5 mph.
Partly Cloudy

 Friday

Friday: Partly sunny, then gradually becoming sunny, with a high near 55. South wind 5 to 10 mph.
Becoming
Sunny
 Friday
Night
Friday Night: Areas of fog after midnight. Otherwise, mostly clear, with a low around 32. South southeast wind around 5 mph becoming calm in the evening.
Mostly Clear
then Areas
Fog
 Saturday

Saturday: Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 55. Light and variable wind becoming south 5 to 8 mph in the afternoon.
Areas Dense
Fog then
Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 36. Light and variable wind becoming north 5 to 9 mph after midnight.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 51.
Sunny

 Sunday
Night
Sunday Night: Clear, with a low around 23.
Clear

 Monday

Monday: Sunny, with a high near 51.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 30.
Mostly Clear
Lo 27 °F Hi 55 °F Lo 32 °F Hi 55 °F Lo 36 °F Hi 51 °F Lo 23 °F Hi 51 °F Lo 30 °F

 

Overnight
 
 Partly cloudy, with a low around 27. Calm wind becoming south around 5 mph.
Friday
 
 Partly sunny, then gradually becoming sunny, with a high near 55. South wind 5 to 10 mph.
Friday Night
 
 Areas of fog after midnight. Otherwise, mostly clear, with a low around 32. South southeast wind around 5 mph becoming calm in the evening.
Saturday
 
 Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 55. Light and variable wind becoming south 5 to 8 mph in the afternoon.
Saturday Night
 
 Mostly clear, with a low around 36. Light and variable wind becoming north 5 to 9 mph after midnight.
Sunday
 
 Sunny, with a high near 51.
Sunday Night
 
 Clear, with a low around 23.
Monday
 
 Sunny, with a high near 51.
Monday Night
 
 Mostly clear, with a low around 30.
Tuesday
 
 Sunny, with a high near 62.
Tuesday Night
 
 Mostly clear, with a low around 41.
Wednesday
 
 Sunny, with a high near 62.
Wednesday Night
 
 Mostly clear, with a low around 33.
Thursday
 
 Sunny, with a high near 61.

 

Forecast from NOAA-NWS for Duncan OK.