Dangerous Heat Wave from the Midwest to East Coast

A large ridge of high pressure extending from the Central to Eastern U.S. will deliver a dangerous summer heat wave through the weekend. Widespread excessive heat warnings and heat advisories already cover the Eastern two-thirds of the country. A number of record highs and overnight warm minimum temperatures are likely. Heat indices will surge past 100 degrees and approach the 110s. Heat Safety! Read More >

Hazardous Weather Conditions

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Mostly Cloudy

89°F

32°C

Humidity 63%
Wind Speed Calm
Barometer 30.10 in (1018.3 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 19 Jul 11:53 am EDT
Extended Forecast for

Decatur TN

  • This
    Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Mostly sunny and hot, with a high near 92. Heat index values as high as 102. Calm wind becoming southwest around 5 mph.

    Chance
    T-storms

    High: 92 °F

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 74. Calm wind.

    Chance
    T-storms then
    Partly Cloudy

    Low: 74 °F

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny and hot, with a high near 91. Heat index values as high as 101. Calm wind becoming southeast around 5 mph in the afternoon.

    Chance
    T-storms

    High: 91 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 72. Southwest wind around 5 mph.

    Chance
    T-storms

    Low: 72 °F

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 2pm.  Mostly cloudy, with a high near 89. Southwest wind 5 to 10 mph.  Chance of precipitation is 60%.

    Slight Chance
    T-storms then
    T-storms
    Likely

    High: 89 °F

  • Sunday
    Night

    Sunday Night: Showers and thunderstorms likely, mainly before 8pm.  Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 72 °F

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 2pm.  Cloudy, with a high near 85. Chance of precipitation is 70%.

    T-storms
    Likely

    High: 85 °F

  • Monday
    Night

    Monday Night: Showers and thunderstorms likely.  Cloudy, with a low around 68. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 68 °F

  • Tuesday

    Tuesday: Showers likely, mainly before 2pm.  Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    Showers
    Likely

    High: 82 °F

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 92. Heat index values as high as 102. Calm wind becoming southwest around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 74. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny and hot, with a high near 91. Heat index values as high as 101. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 72. Southwest wind around 5 mph.
Sunday
Showers and thunderstorms likely, mainly after 2pm. Mostly cloudy, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely, mainly after 2pm. Cloudy, with a high near 85. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely. Cloudy, with a low around 68. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Decatur TN
 35.52°N 84.79°W (Elev. 778 ft)
11:38 am EDT Jul 19, 2019
12pm EDT Jul 19, 2019-6pm EDT Jul 25, 2019
 
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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