TAMPA, Fla. (WFLA) - Today was hot & steamy, with limited showers that moved inland quickly. Steamy evening temperatures will be slow to cool, only making it down into the low 80s overnight.

Rain chances look similar on Wednesday - a few showers develop and quickly spread east of I-75 and over to the east coast by the evening.

The rain chance increases on Thursday as a rare August cold front arrives. This front ushers in some lower humidity for the end of the week.

Temperatures remain in the low 90s, but heat index values stay below 100 Friday and Saturday. The drier air also limits rain chances to just 10%.

Overnight lows will be the most noticeable change thanks to the front, instead of waking up in the very muggy low 80s, we will wake up in the refreshing mid 70 on Friday and Saturday morning.

The lower humidity doesn't stick around long. We start to feel the mugginess return early next week, and that brings back scattered afternoon rain as well.

Tropical Storm Ernesto has formed in the Atlantic, and it should strengthen as it makes a turn to the north. The forecast track keeps it far off the U.S. coastline.