There could be scattered showers today across southwestern Connecticut, with some of the storms buffeting the region with heavy rain and lightning.

Skies will be mostly cloudy, the National Weather Service says, with the daytime high temperature rising to the low-80s and a southwest wind 3 to 7 mph.

Tonight, there could be more scattered showers and thunderstorms, mainly before 11 p.m. The temperature will dip to a low in the mid-60s and there will be a south wind around 6 mph. Patchy fog will settle over sections of the region overnight and early tomorrow, the NWS says.

Tomorrow there may be isolated showers and thunderstorms after noon, and the temperature will reach into the mid-80s. Nighttime is expected to be mostly clear with a low temperature in the upper-60s.

Friday should be partly sunny, with a high temperature about 90 degrees. Overnight, more clouds move in and the temperature drops to a low about 70 degrees.

On Saturday, skies should be mostly sunny, with a high temperature in the upper-80s. Saturday should be mostly cloudy, with a low temperature around 70 degrees.

The outlook for Sunday, according to the weather service, is partly sunny -- but showers and thunderstorms possible -- and a high temperature in the mid-80s.