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Hazardous Weather Conditions

Current conditions at

Greenville, Mid Delta Regional Airport (KGLH)

Lat: 33.48°NLon: 90.99°WElev: 131ft.

Fair

84°F

29°C

Humidity 70%
Wind Speed S 10 mph
Barometer 29.91 in (1013.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 20 Aug 12:53 am CDT
Extended Forecast for

Chatham MS

Heat Advisory August 20, 11:00am until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 77. South southwest wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101. Heat index values as high as 109. South southwest wind around 5 mph.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before 10pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 75. Southwest wind around 5 mph becoming calm.

    Low: 75 °F

    Heavy Rain
    then Mostly
    Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 109. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. North wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Calm wind becoming north around 5 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 74. South southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Calm wind becoming north around 5 mph in the afternoon.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 74. East wind around 5 mph. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 77. South southwest wind around 5 mph.
Thursday
Sunny and hot, with a high near 101. Heat index values as high as 109. South southwest wind around 5 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms before 10pm. Some of the storms could produce heavy rainfall. Increasing clouds, with a low around 75. Southwest wind around 5 mph becoming calm.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 109. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 73. North wind around 5 mph becoming calm in the evening.
Saturday
Sunny and hot, with a high near 100. Calm wind becoming north around 5 mph.
Saturday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 74. South southeast wind around 5 mph becoming calm. Chance of precipitation is 20%.
Sunday
Sunny and hot, with a high near 98. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 74. East wind around 5 mph. Chance of precipitation is 20%.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 95. Chance of precipitation is 20%.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers. Mostly sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chatham MS
 33.1°N 91.09°W
Last Update:
1:26 am CDT Aug 20, 2026
Forecast Valid:
1am CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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