CLARKSVILLE, TN (CLARKSVILLE NOW) – With temperatures and humidity baking Middle Tennessee this week, the National Weather Service has issued an Extreme Heat Warning until 8 p.m. Thursday. Dangerously hot conditions are expected, with heat index values up to 112, the NWS said.

Monday’s high reached just under 94 degrees at 4 p.m. at Clarksville Regional Airport, with a 105 heat index. Sunday hit just under 92, with a 103 index.

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

“Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses,” the NWS said. “Overnight lows will remain warm, only falling into the mid to upper 70s, this will bring limited relief from the heat especially to those that do not have air conditioning.”

“Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.”

Clarksville forecast

Here’s the day-by-day outlook.

  • Monday night: Mostly clear, with a low around 75. Southwest wind around 5 mph becoming calm in the evening.
  • Tuesday: Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind.
  • Tuesday night: Mostly clear, with a low around 75. Calm wind.
  • Wednesday: Sunny and hot, with a high near 98. Heat index values as high as 111. Calm wind becoming south around 5 mph.
  • Wednesday night: Mostly clear, with a low around 77. Calm wind.
  • Thursday: A 40% chance of showers and thunderstorms after 1 p.m. Sunny and hot, with a high near 97. Calm wind becoming north around 5 mph.
  • Thursday night: A 30% chance of showers and thunderstorms before 1 a.m. Mostly clear, with a low around 75. East southeast wind around 5 mph becoming calm.
  • Friday: A 50% chance of showers and thunderstorms after 1 p.m. Sunny, with a high near 95. Calm wind becoming north around 5 mph in the afternoon.
  • Friday night: A 20% chance of showers and thunderstorms before 1 a.m. Mostly clear, with a low around 75. South southwest wind around 5 mph becoming calm.
  • Independence Day: A 40% chance of showers and thunderstorms, mainly after 1 p.m. Mostly sunny, with a high near 94.
  • Saturday night: A 20% chance of showers and thunderstorms. Partly cloudy, with a low around 75.

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