National Weather Service Forecast for: Shawnee OK
Issued by: National Weather Service Norman, OK
Updated: 1:26 am CDT Aug 20, 2026
 
Overnight

Overnight: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 76. East wind around 5 mph.
Slight Chance
T-storms

 Thursday

Thursday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 103. East wind 3 to 5 mph. Chance of precipitation is 20%.
Slight Chance
T-storms

 Thursday
Night
Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. East southeast wind 3 to 6 mph.
Partly Cloudy
then Slight
Chance
T-storms
 Friday

Friday: Sunny and hot, with a high near 104. South southeast wind 3 to 6 mph.
Hot

 Friday
Night
Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. East southeast wind 5 to 7 mph becoming south after midnight.
Mostly Clear
then Slight
Chance
T-storms
 Saturday

Saturday: Mostly sunny and hot, with a high near 103.
Hot

 Saturday
Night
Saturday Night: Mostly clear, with a low around 75.
Mostly Clear

 Sunday

Sunday: Mostly sunny and hot, with a high near 100.
Hot

 Sunday
Night
Sunday Night: Mostly clear, with a low around 77.
Mostly Clear
Lo 76 °F Hi 103 °F Lo 75 °F Hi 104 °F Lo 75 °F Hi 103 °F Lo 75 °F Hi 100 °F Lo 77 °F

Heat Advisory
 

Overnight
 
 A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 76. East wind around 5 mph.
Thursday
 
 A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 103. East wind 3 to 5 mph. Chance of precipitation is 20%.
Thursday Night
 
 A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. East southeast wind 3 to 6 mph.
Friday
 
 Sunny and hot, with a high near 104. South southeast wind 3 to 6 mph.
Friday Night
 
 A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. East southeast wind 5 to 7 mph becoming south after midnight.
Saturday
 
 Mostly sunny and hot, with a high near 103.
Saturday Night
 
 Mostly clear, with a low around 75.
Sunday
 
 Mostly sunny and hot, with a high near 100.
Sunday Night
 
 Mostly clear, with a low around 77.
Monday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 103.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 77.
Tuesday
 
 Mostly sunny and hot, with a high near 102.
Tuesday Night
 
 Partly cloudy, with a low around 75.
Wednesday
 
 Mostly sunny and hot, with a high near 99.

 

Forecast from NOAA-NWS for Shawnee OK.