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

Hazardous Weather Conditions

Current conditions at

Jackson, Jackson International Airport (KJAN)

Lat: 32.32°NLon: 90.08°WElev: 344ft.

Partly Cloudy

97°F

36°C

Humidity 49%
Wind Speed NW 3 mph
Barometer 30.02 in (1015.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 21 Aug 11:54 am CDT
Extended Forecast for

4 Miles NNW Polkville MS

Heat Advisory until August 21, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 21, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 99 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming north around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

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

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 98. Calm wind becoming east around 5 mph.

    High: 98 °F

    Hot

  • Sunday Night

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

    Low: 72 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.

    High: 95 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

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

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 107. West northwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 72. Northwest wind around 5 mph becoming calm.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 72. Calm wind.
Sunday
Mostly sunny and hot, with a high near 98. Calm wind becoming east around 5 mph.
Sunday Night
Partly cloudy, with a low around 72. Calm wind.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. Calm wind becoming southwest around 5 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 72. Calm wind.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 94. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Polkville MS
 32.25°N 89.72°W
Last Update:
11:15 am CDT Aug 21, 2026
Forecast Valid:
12pm CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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