Severe thunderstorm warnings have been issued for New Haven and Fairfield counties until 10:15 p.m.
Severe thunderstorm warnings and watches were issued Wednesday evening for Hartford, Tolland and Litchfield counties.
While the day was expected to be a degree or two hotter than Tuesday's high of 91, a cold front could put an end to the heat and humidity and bring along some unsettled weather with it.
Chief Meteorologist Bruce Deprest said storms Wednesday evening could "pack a good punch" and showers could linger Thursday morning.
The front was expected to slowly move through the state on Thursday, which means it will be noticeably cooler.
"By Friday, the front will move well offshore allowing high pressure to build eastward into New England," said Meteorologist Scot Haney. "That's why we're so optimistic Friday will be a terrific day."
This July, the temperature has reached 90 degrees or higher a total of seven times at Bradley International Airport in Windsor Locks. Though it reached 91 on Tuesday, it was not as hot as it was on that date back in 2011 when the mercury reached 103 degrees in Windsor Locks and in Bridgeport.
"That is the all-time hottest temperature on record for both locations," said Haney. "The state record is 106.2 degrees, which was set in Danbury on July 15, 1995."
The next chance for 90-degree temperatures could be on Sunday. It would be noticeably more humid then as well.
"We can't rule out a shower or thunderstorm on Sunday as the atmosphere heats up and becomes more unstable," said Haney.
Next week could start out as unstable as another cold front pushes into the humid air.
"Showers and thunderstorms are likely Monday and Monday night," said Haney.
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