Summer claims its stake in Connecticut and delivers extreme heat and humidity.

Temperatures starting tomorrow will climb into the mid-90s. It will feel like it's 100 degrees starting tomorrow afternoon for Fairfield & S. Litchfield counties. Northern Litchfield County will see a heat index near 95 degrees.

The National Weather Service has issued an extreme heat warning and heat advisory through Tuesday night. The worst heat will be felt on Monday and Tuesday. That's when the heat index could reach 105 degrees or higher. It is dangerous when it gets this hot. Please take precautions to stay safe and healthy.

There is a slight risk of some decaying showers and thunderstorms swinging southward for tomorrow morning.

There is no relief until the end of next week. There is a risk of some thunderstorms by Thursday.

TONIGHT: Partly cloudy, warm & humid. Low 72.

SUNDAY: Hot & humid. Mostly sunny. High 95. Heat Index 100.

MONDAY: Mostly sunny. High 95.

TUESDAY: Mostly sunny. High 96.

WEDNESDAY: Mostly sunny, risk of a shower or storm. High 94.

THURSDAY: Partly sunny, thunderstorms. High 83.

FRIDAY: Partly sunny, evening storms. High 80.

SATURDAY: Early clouds and showers, then sunshine. High 78.