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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

99°F

37°C

Humidity 45%
Wind Speed NE 8 mph
Barometer 29.97 in (1015.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index111°F (44°C)
Last update 18 Aug 1:53 pm CDT
Extended Forecast for

Chatham MS

Extreme Heat Warning August 19, 10:00am until August 19, 08:00pm
Extreme Heat Warning August 18, 02:35pm until August 18, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
Extreme Heat Warning
  •  
    Extreme Heat Warning August 18, 02:35pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Extreme Heat Warning

  • This Afternoon

    High: 100 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 74. East northeast wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

  • Tuesday

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

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. East wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 99. Calm wind becoming north around 5 mph in the afternoon.

    High: 99 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. North northeast wind around 5 mph becoming calm in the evening.

    Low: 72 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming north northeast around 5 mph in the morning.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Northeast wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 100. Heat index values as high as 109. Northeast wind around 5 mph.
Tonight
Mostly clear, with a low around 74. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 100. Heat index values as high as 109. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 74. East wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 99. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. North northeast wind around 5 mph becoming calm in the evening.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming north northeast around 5 mph in the morning.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Northeast wind around 5 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 71.
Saturday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chatham MS
 33.1°N 91.09°W
Last Update:
2:15 pm CDT Aug 18, 2025
Forecast Valid:
2pm CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
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