Friday starts warm and muggy across most of Connecticut, with air temperatures and dewpoints in the 70s and patchy fog fading within a few hours of sunrise. A cold front moves through later today, and that brings a chance for isolated storms late this afternoon through the evening hours.
Those storms are expected to be few in number, but they could still be a bit strong, with downpours and lightning, and some could be severe. The rest of the week ends seasonably warm and humid, but the pattern turns much drier behind the front for Saturday and Sunday.
Connecticut Friday forecast
The timing matters for anyone planning to be outdoors after work or school, because the storm window is tied to the late-afternoon and evening hours rather than the morning. The cold front is the change point in the setup: before it passes, the air stays sticky; after it moves through, the weekend is expected to settle into seasonable temperatures with much less humidity.
That setup leaves the main risk focused on brief bursts of heavy rain and lightning, not a long-lasting round of storms. Readers across Connecticut should treat the second half of the day as the more active period, especially in the hours leading into evening.
Saturday and Sunday
Behind the front, the weekend is expected to look dry, with temperatures seasonable both Saturday and Sunday. Mugginess is not expected to be much of a factor at all, and the new week is expected to start dry and bright before turning warmer and muggier again.
By midweek, temperatures are expected to climb back near or above 90 and feel hotter because of the humidity, which would put the state back into a more summer-like stretch. If three consecutive days reach at or above 90, that would be the third heat wave of 2026.
Friday and July 4th
The forecast comes after a busy stretch that included severe storms on the evening of July 4th, when a severe thunderstorm watch covered the state and the first warnings came in the evening hours. A rogue cell ahead of the line dropped large hail and damaging wind gusts, with golf ball-sized hail reported in Forestville and Bristol and gusts reaching 80 mph.
Many towns reported downed trees and power lines, and Torrington, Harwinton and Madison were among the hardest hit. Outages peaked at over 100,000 between UI and Eversource, and the storms moved from west to east.
Later in the month, another wet spell brought flooding concerns when showers began on Sunday, July 5th, then intensified overnight into Monday, July 6th. Parts of Fairfield county received over 5 inches of rain, Danbury logged 5.91 inches, and the Still River at Brookfield reached the moderate flood stage.
The short-term question now is not whether the whole day turns stormy, but how many parts of Connecticut catch one of the isolated storms later today. The forecast leaves the strongest chance for disruption in a narrow window, then gives the state a dry weekend to reset before humidity builds again.
