National Weather Service Forecast for: Newcastle OK
Issued by: National Weather Service Norman, OK
Updated: 2:51 pm CDT Jul 16, 2026
 
This
Afternoon
This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. South wind around 15 mph, with gusts as high as 23 mph.
Chance
T-storms

 Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 71. South wind 9 to 14 mph, with gusts as high as 21 mph.
Chance
T-storms then
Partly Cloudy
 Friday

Friday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 89. South southwest wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Slight Chance
Showers then
Chance
T-storms
 Friday
Night
Friday Night: Mostly clear, with a low around 72. South wind 9 to 15 mph, with gusts as high as 23 mph.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 92. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.
Sunny

 Saturday
Night
Saturday Night: Mostly clear, with a low around 73.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 95.
Sunny

 Sunday
Night
Sunday Night: Clear, with a low around 75.
Clear

 Monday

Monday: Sunny and hot, with a high near 100.
Hot
Hi 88 °F Lo 71 °F Hi 89 °F Lo 72 °F Hi 92 °F Lo 73 °F Hi 95 °F Lo 75 °F Hi 100 °F

 

This Afternoon
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. South wind around 15 mph, with gusts as high as 23 mph.
Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 71. South wind 9 to 14 mph, with gusts as high as 21 mph.
Friday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 89. South southwest wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Friday Night
 
 Mostly clear, with a low around 72. South wind 9 to 15 mph, with gusts as high as 23 mph.
Saturday
 
 Sunny, with a high near 92. South southwest wind 10 to 16 mph, with gusts as high as 24 mph.
Saturday Night
 
 Mostly clear, with a low around 73.
Sunday
 
 Sunny, with a high near 95.
Sunday Night
 
 Clear, with a low around 75.
Monday
 
 Sunny and hot, with a high near 100.
Monday Night
 
 Clear, with a low around 77.
Tuesday
 
 Sunny and hot, with a high near 103.
Tuesday Night
 
 Mostly clear, with a low around 77.
Wednesday
 
 Sunny and hot, with a high near 100.

 

Forecast from NOAA-NWS for Newcastle OK.