National Weather Service Forecast for: Horn Lake MS
Issued by: National Weather Service Memphis, TN
Updated: 3:05 pm CDT Jul 28, 2026
 
Tonight

Tonight: A 10 percent chance of showers after 5am. Increasing clouds, with a low around 79. West wind around 5 mph becoming calm in the evening.
Partly Cloudy
then Slight
Chance
Showers
 Wednesday

Wednesday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 92. Heat index values as high as 103. North wind 5 to 10 mph. Chance of precipitation is 30%.
Chance
Showers then
Slight Chance
T-storms
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 72. East northeast wind around 5 mph.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 91. Northeast wind 5 to 10 mph.
Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 71. Northeast wind 5 to 10 mph.
Partly Cloudy

 Friday

Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 91. East southeast wind around 5 mph becoming south in the afternoon. Chance of precipitation is 30%.
Chance
Showers then
Chance
T-storms
 Friday
Night
Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind 5 to 10 mph.
Chance
T-storms

 Saturday

Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. South southwest wind 10 to 15 mph becoming northwest in the afternoon.
Chance
T-storms

 Saturday
Night
Saturday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 71.
Chance
Showers
Lo 79 °F Hi 92 °F Lo 72 °F Hi 91 °F Lo 71 °F Hi 91 °F Lo 74 °F Hi 88 °F Lo 71 °F

Extreme Heat Warning
 

Tonight
 
 A 10 percent chance of showers after 5am. Increasing clouds, with a low around 79. West wind around 5 mph becoming calm in the evening.
Wednesday
 
 A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 92. Heat index values as high as 103. North wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday Night
 
 Mostly clear, with a low around 72. East northeast wind around 5 mph.
Thursday
 
 Sunny, with a high near 91. Northeast wind 5 to 10 mph.
Thursday Night
 
 Partly cloudy, with a low around 71. Northeast wind 5 to 10 mph.
Friday
 
 A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 91. East southeast wind around 5 mph becoming south in the afternoon. Chance of precipitation is 30%.
Friday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South wind 5 to 10 mph.
Saturday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. South southwest wind 10 to 15 mph becoming northwest in the afternoon.
Saturday Night
 
 A 30 percent chance of showers before 1am. Partly cloudy, with a low around 71.
Sunday
 
 A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Sunday Night
 
 Partly cloudy, with a low around 71.
Monday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Monday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 73.
Tuesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Horn Lake MS.