Today

A 30 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 99. Southwest wind 7 to 13 mph.

Tonight

A 50 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, then gradually becoming mostly clear, with a low around 70. Southwest wind 5 to 8 mph becoming calm after midnight.

Tomorrow

A 30 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 92. Heat index values as high as 97. Calm wind becoming southwest 5 to 7 mph in the afternoon.

Tomorrow Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 6 mph becoming calm in the evening.

Click Here to View Heat Advisory & Precaution Details [11:00 AM Tuesday - 8:00 PM Wednesday]

• Heat index values between 95 and 98 degrees expected.

• Affecting Southern Fairfield County.

• High temperatures and high humidity may cause heat illnesses to occur.

The highest index values will occur during the afternoon and early evening hours - between 1 and 5 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS.

A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time.

Seniors and those with chronic health problems or mental health conditions are at an increased risk.

Homes without air conditioning can be much hotter than outdoor temperatures. Use air conditioning to stay cool at home or go to a place that has air conditioning. Check on vulnerable friends, family members and neighbors.

To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.