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

Remnants of Arthur and Heavy Rainfall Across the South; Severe Weather for the East

Potential life threatening flash flooding across the northern Gulf Coast states as the remnants of Arthur track across the area. Remember, turn around - don't drown. In addition, severe thunderstorms with tornadoes are possible with the circulation of this storm. The threat for more severe thunderstorms will occur across portions of the Northeast, mid-Atlantic and central Appalachian's. Read More >

Hazardous Weather Conditions

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Light Rain

75°F

24°C

Humidity 88%
Wind Speed Calm
Barometer 29.89 in (1011.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 18 Jun 5:53 pm EDT
Extended Forecast for

Mc Donald TN

  • Tonight

    Tonight: Showers and thunderstorms, mainly before midnight. Low around 69. South wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    T-storms then
    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 84 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Calm wind becoming northeast around 5 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Light south wind becoming southwest 5 to 10 mph in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 71. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 90%.

    High: 84 °F

    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 69. Chance of precipitation is 80%.

    Low: 69 °F

    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before midnight. Low around 69. South wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 63. North wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 84. Calm wind becoming northeast around 5 mph.
Saturday Night
Partly cloudy, with a low around 66. Calm wind.
Sunday
A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 71. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm. High near 84. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 69. Chance of precipitation is 80%.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mc Donald TN
 35.08°N 84.99°W (Elev. 896 ft)
Last Update:
2:41 pm EDT Jun 18, 2026
Forecast Valid:
6pm EDT Jun 18, 2026-6pm EDT Jun 25, 2026
 
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