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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Winfield / Arkansas City, Strother Field (KWLD)

Lat: 37.17°NLon: 97.04°WElev: 1158ft.

Fair

92°F

33°C

Humidity 47%
Wind Speed SW 10 mph
Barometer 29.89 in (1010.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 31 Jul 10:54 am CDT
Extended Forecast for

Grainola OK

Extreme Heat Warning July 31, 12:00pm until July 31, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: Sunny, with a high near 99. Heat index values as high as 105. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 99 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 67. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 89. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 64. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 91. North wind around 5 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 65. East wind around 5 mph.

    Low: 65 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 92. Southeast wind 5 to 10 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 68. East wind 5 to 10 mph.

    Low: 68 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Southeast wind 5 to 10 mph.

    High: 95 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 99. Heat index values as high as 105. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tonight
Clear, with a low around 67. North wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 89. North wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 64. North wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 91. North wind around 5 mph.
Sunday Night
Clear, with a low around 65. East wind around 5 mph.
Monday
Sunny, with a high near 92. Southeast wind 5 to 10 mph.
Monday Night
Clear, with a low around 68. East wind 5 to 10 mph.
Tuesday
Sunny, with a high near 95. Southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 72. Southeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 97. Southeast wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 74. Southeast wind around 10 mph.
Thursday
Mostly sunny, with a high near 98. South wind around 10 mph, with gusts as high as 20 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grainola OK
 36.94°N 96.65°W
Last Update:
9:50 am CDT Jul 31, 2026
Forecast Valid:
11am CDT Jul 31, 2026-6pm CDT Aug 6, 2026
 
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