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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Huntsville, Madison County Executive Airport (KMDQ)

Lat: 34.86°NLon: 86.56°WElev: 755ft.

Fair

71°F

22°C

Humidity 96%
Wind Speed N 3 mph
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 3:15 am CDT
Extended Forecast for

3 Miles NNE Huntsville AL

Heat Advisory August 18, 10:00am until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. Heat index values as high as 106. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming north northeast around 5 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 74. Calm wind.
Monday
Sunny, with a high near 96. Heat index values as high as 106. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming north northeast around 5 mph.
Tuesday Night
Mostly clear, with a low around 75. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 73.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Huntsville AL
 34.74°N 86.62°W (Elev. 689 ft)
Last Update:
3:17 am CDT Aug 18, 2025
Forecast Valid:
3am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
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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