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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Morristown Moore-Murrell Airport (KMOR)

Lat: 36.18°NLon: 83.38°WElev: 1313ft.

Fair

90°F

32°C

Humidity 67%
Wind Speed W 8 mph
Barometer 30.12 in
Dewpoint 77°F (25°C)
Visibility 9.00 mi
Heat Index104°F (40°C)
Last update 29 Jun 3:15 pm EDT
Extended Forecast for

Jefferson City TN

Heat Advisory June 30, 11:00am until July 2, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. Heat index values as high as 100. Calm wind.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Increasing clouds, with a low around 72. Calm wind.

    Low: 72 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 92. Heat index values as high as 101. Calm wind.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. Calm wind.

    High: 93 °F

    Hot

  • Wednesday Night

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

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94. Calm wind.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93.

    High: 93 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. Heat index values as high as 100. Calm wind.
Tonight
Increasing clouds, with a low around 72. Calm wind.
Tuesday
Mostly sunny and hot, with a high near 92. Heat index values as high as 101. Calm wind.
Tuesday Night
Mostly clear, with a low around 73. Calm wind.
Wednesday
Sunny and hot, with a high near 93. Calm wind.
Wednesday Night
Mostly clear, with a low around 74. Calm wind.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 94. Calm wind.
Thursday Night
A 20 percent chance of showers and thunderstorms before 2am. Mostly clear, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 93.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 72.
Independence Day
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jefferson City TN
 36.13°N 83.48°W (Elev. 1099 ft)
Last Update:
2:26 pm EDT Jun 29, 2026
Forecast Valid:
3pm EDT Jun 29, 2026-6pm EDT Jul 5, 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