National Weather Service Forecast for: Collierville TN
Issued by: National Weather Service Memphis, TN
Updated: 3:21 am CDT Aug 20, 2026
 
Today

Today: Mostly sunny and hot, with a high near 98. Heat index values as high as 110. South southwest wind 5 to 10 mph becoming west in the afternoon.
Hot

 Tonight

Tonight: Partly cloudy, with a low around 74. North northwest wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Friday

Friday: Sunny, with a high near 95. Heat index values as high as 102. Light north northeast wind becoming north 5 to 10 mph in the afternoon.
Sunny

 Friday
Night
Friday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. North northeast wind around 5 mph becoming calm in the evening.
Mostly Clear
then Patchy
Fog
 Saturday

Saturday: Areas of fog before 8am. Otherwise, sunny and hot, with a high near 97. Calm wind becoming north around 5 mph in the afternoon.
Areas Fog
then Sunny
 Saturday
Night
Saturday Night: Partly cloudy, with a low around 72. Northeast wind around 5 mph.
Partly Cloudy

 Sunday

Sunday: Sunny, with a high near 92. North northeast wind 5 to 10 mph.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 70. East northeast wind 5 to 10 mph.
Partly Cloudy

 Monday

Monday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90.
Slight Chance
T-storms
Hi 98 °F Lo 74 °F Hi 95 °F Lo 71 °F Hi 97 °F Lo 72 °F Hi 92 °F Lo 70 °F Hi 90 °F

 

Today
 
 Mostly sunny and hot, with a high near 98. Heat index values as high as 110. South southwest wind 5 to 10 mph becoming west in the afternoon.
Tonight
 
 Partly cloudy, with a low around 74. North northwest wind around 5 mph becoming calm in the evening.
Friday
 
 Sunny, with a high near 95. Heat index values as high as 102. Light north northeast wind becoming north 5 to 10 mph in the afternoon.
Friday Night
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. North northeast wind around 5 mph becoming calm in the evening.
Saturday
 
 Areas of fog before 8am. Otherwise, sunny and hot, with a high near 97. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 72. Northeast wind around 5 mph.
Sunday
 
 Sunny, with a high near 92. North northeast wind 5 to 10 mph.
Sunday Night
 
 Partly cloudy, with a low around 70. East northeast wind 5 to 10 mph.
Monday
 
 A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90.
Monday Night
 
 A 30 percent chance of showers after 1am. Partly cloudy, with a low around 70.
Tuesday
 
 A 20 percent chance of showers and thunderstorms. Sunny, with a high near 94.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 72.
Wednesday
 
 A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.

 

Forecast from NOAA-NWS for Collierville TN.