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

Guntersville Municipal Airport (K8A1)

Lat: 34.4°NLon: 86.27°WElev: 600ft.

Fair

81°F

27°C

Humidity 89%
Wind Speed SE 1 mph
Barometer 30.07 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 18 Sep 8:35 pm CDT
Extended Forecast for

Grant ALSimilar City Names

Heat Advisory September 18, 09:02pm until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 09:02pm until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Tonight

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 95. Heat index values as high as 101. Calm wind.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. Calm wind becoming east southeast around 5 mph.

    Low: 72 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 92. Heat index values as high as 100. Southeast wind around 5 mph becoming calm.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 73. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 95. Heat index values as high as 101. Calm wind.
Saturday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 72. Calm wind becoming east southeast around 5 mph.
Sunday
Sunny, with a high near 92. Heat index values as high as 100. Southeast wind around 5 mph becoming calm.
Sunday Night
Partly cloudy, with a low around 72. Calm wind.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92.
Monday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
Tuesday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Wednesday
A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 62.
Friday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grant ALSimilar City Names
 34.52°N 86.25°W (Elev. 1201 ft)
Last Update:
8:50 pm CDT Sep 18, 2026
Forecast Valid:
9pm CDT Sep 18, 2026-6pm CDT Sep 25, 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