National Weather Service Forecast for: Clarksville AR
Issued by: National Weather Service Little Rock, AR
Updated: 7:35 am CDT Sep 13, 2026
 
Today

Today: Mostly sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind becoming east around 5 mph.
Hot
 Tonight

Tonight: Mostly clear, with a low around 72. East wind around 5 mph becoming calm.
Mostly Clear
 Monday

Monday: Sunny and hot, with a high near 100. Heat index values as high as 110. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Hot
 Monday
Night
Monday Night: Mostly clear, with a low around 73. Southeast wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Mostly Clear
 Tuesday

Tuesday: Sunny and hot, with a high near 100. Calm wind becoming south around 5 mph in the afternoon.
Hot
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 73. South southeast wind around 5 mph becoming calm in the evening.
Mostly Clear
 Wednesday

Wednesday: Sunny and hot, with a high near 100. Calm wind becoming south around 5 mph in the afternoon.
Hot
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 72. East southeast wind around 5 mph becoming calm.
Mostly Clear
 Thursday

Thursday: Sunny and hot, with a high near 100. Calm wind becoming south southeast around 5 mph in the afternoon.
Hot
Hi 98 °F Lo 72 °F Hi 100 °F Lo 73 °F Hi 100 °F Lo 73 °F Hi 100 °F Lo 72 °F Hi 100 °F

Heat Advisory
 

Today
 
 Mostly sunny and hot, with a high near 98. Heat index values as high as 109. Calm wind becoming east around 5 mph.
Tonight
 
 Mostly clear, with a low around 72. East wind around 5 mph becoming calm.
Monday
 
 Sunny and hot, with a high near 100. Heat index values as high as 110. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Monday Night
 
 Mostly clear, with a low around 73. Southeast wind around 5 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Tuesday
 
 Sunny and hot, with a high near 100. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 73. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
 
 Sunny and hot, with a high near 100. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 72. East southeast wind around 5 mph becoming calm.
Thursday
 
 Sunny and hot, with a high near 100. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
 
 Mostly clear, with a low around 71.
Friday
 
 A 20 percent chance of showers. Sunny and hot, with a high near 98.
Friday Night
 
 Mostly clear, with a low around 67.
Saturday
 
 Sunny, with a high near 93.

 

Forecast from NOAA-NWS for Clarksville AR.