National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Shawnee, Shawnee Municipal Airport (KSNL)

Lat: 35.36°NLon: 96.94°WElev: 1073ft.

Fair

81°F

27°C

Humidity 67%
Wind Speed S 6 mph
Barometer 29.98 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 15 Aug 1:55 am CDT
Extended Forecast for

Johnson OK

Heat Advisory August 15, 12:00pm until August 15, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 74. South southeast wind around 7 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 104. South wind 7 to 11 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. South southeast wind 8 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 97. Heat index values as high as 102. South wind 8 to 11 mph.

    High: 97 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 76. South wind 7 to 10 mph.

    Low: 76 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 74. South southeast wind around 7 mph.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 104. South wind 7 to 11 mph.
Friday Night
Mostly clear, with a low around 76. South southeast wind 8 to 10 mph.
Saturday
Sunny and hot, with a high near 97. Heat index values as high as 102. South wind 8 to 11 mph.
Saturday Night
Partly cloudy, with a low around 76. South wind 7 to 10 mph.
Sunday
Mostly sunny and hot, with a high near 97.
Sunday Night
Partly cloudy, with a low around 75.
Monday
Mostly sunny and hot, with a high near 97.
Monday Night
Partly cloudy, with a low around 75.
Tuesday
Mostly sunny and hot, with a high near 97.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johnson OK
 35.39°N 96.85°W
Last Update:
12:46 am CDT Aug 15, 2025
Forecast Valid:
2am CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation