Update, 3 p.m.: The Heat Advisory from the National Weather Service has been extended until Saturday at 8 p.m. The current temperature at Outlaw Field Airport in Clarksville is 100 degrees, with a heat index of 109.

Previously:

CLARKSVILLE, TN (CLARKSVILLE NOW) – Hot weather will continue Friday and Saturday before temperatures gradually ease through the Labor Day weekend. Heat index values could reach as high as 110 degrees Friday, according to the National Weather Service.

On Tuesday at Outlaw Field, the high reached 97 degrees at 4 p.m., with a heat index of 105. On Wednesday, it was 98, with an index of 104.

A Heat Advisory from the National Weather Service remains in effect through 8 p.m. Friday. “Hot temperatures and high humidity may cause heat illnesses,” the NWS said. “Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.”

| MORE: What’s a heat index? Your guide to hot weather warnings

Clarksville forecast

Here’s the day-by-day outlook.

  • Friday: A slight chance of showers and thunderstorms between 3 and 4 p.m. Sunny and hot, with a high near 97. Heat index values as high as 110. Calm wind. Chance of precipitation is 20%.
  • Friday night: Mostly clear, with a low around 74. Calm wind.
  • Saturday: Sunny, with a high near 96. Calm wind becoming north northwest around 5 mph in the afternoon.
  • Saturday night: Patchy fog after 5 a.m. Otherwise, partly cloudy, with a low around 71. Calm wind.
  • Sunday: Patchy fog before 8 a.m. Otherwise, sunny, with a high near 94. Light north northeast wind becoming north 5 to 10 mph in the afternoon.
  • Sunday night: Mostly clear, with a low around 67. East northeast wind 5 to 10 mph.
  • Labor Day: Sunny, with a high near 92. East northeast wind around 5 mph.
  • Monday night: Mostly clear, with a low around 71.

| WEATHER UPDATES: Click here for seven-day and hour-by-hour Clarksville weather forecasts