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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

McAlester, McAlester Regional Airport (KMLC)

Lat: 34.88°NLon: 95.78°WElev: 768ft.

Mostly Cloudy

101°F

38°C

Humidity 26%
Wind Speed Vrbl 6 mph
Barometer 30.04 in (1016.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 18 Sep 3:53 pm CDT
Extended Forecast for

Mc Alester OK

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 5 mph.

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 99. South wind around 5 mph.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 93. Calm wind becoming north around 5 mph in the afternoon.

    High: 93 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. North wind around 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 88. North wind around 5 mph.

    High: 88 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 5 mph.
Tonight
Mostly clear, with a low around 75. South wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. South wind 5 to 10 mph.
Saturday Night
Increasing clouds, with a low around 75. South wind around 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 99. South wind around 5 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 93. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 67. North wind around 5 mph.
Tuesday
Partly sunny, with a high near 88. North wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 65. North wind around 5 mph.
Wednesday
Mostly sunny, with a high near 89. Northeast wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 65. Northeast wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 90. Calm wind becoming east around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Alester OK
 34.93°N 95.77°W
Last Update:
4:11 pm CDT Sep 18, 2026
Forecast Valid:
4pm CDT Sep 18, 2026-6pm CDT Sep 24, 2026
 
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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