National Weather Service Forecast for: Horn Lake MS
Issued by: National Weather Service Memphis, TN
Updated: 6:15 am CDT Jul 10, 2026
 
Today

Today: A 20 percent chance of showers and thunderstorms before noon. Mostly sunny, with a high near 93. Heat index values as high as 107. Southwest wind 10 to 15 mph.
Slight Chance
T-storms

 Tonight

Tonight: Mostly clear, with a low around 77. South southwest wind 5 to 10 mph.
Mostly Clear

 Saturday

Saturday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 92. Heat index values as high as 106. West southwest wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Chance
T-storms
 Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 73. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Showers
Likely

 Sunday

Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. West southwest wind around 5 mph becoming north northwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 72. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Chance
Showers

 Monday

Monday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. North wind 5 to 10 mph. Chance of precipitation is 60%.
Slight Chance
T-storms then
Showers
Likely
 Monday
Night
Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Northeast wind around 5 mph.
Slight Chance
T-storms

 Tuesday

Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.
Slight Chance
T-storms then
Chance
T-storms
Hi 93 °F Lo 77 °F Hi 92 °F Lo 73 °F Hi 88 °F Lo 72 °F Hi 88 °F Lo 71 °F Hi 86 °F

Heat Advisory
 

Today
 
 A 20 percent chance of showers and thunderstorms before noon. Mostly sunny, with a high near 93. Heat index values as high as 107. Southwest wind 10 to 15 mph.
Tonight
 
 Mostly clear, with a low around 77. South southwest wind 5 to 10 mph.
Saturday
 
 A 50 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 92. Heat index values as high as 106. West southwest wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
 Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 73. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Sunday
 
 Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. West southwest wind around 5 mph becoming north northwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 72. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Monday
 
 A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 88. North wind 5 to 10 mph. Chance of precipitation is 60%.
Monday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Northeast wind around 5 mph.
Tuesday
 
 A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Wednesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Wednesday Night
 
 Mostly clear, with a low around 73.
Thursday
 
 A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.

 

Forecast from NOAA-NWS for Horn Lake MS.