Saturday is shaping up to be a gorgeous summer day across Connecticut, but the calm won’t last long. Meteorologists are warning of two separate rounds of thunderstorms coming in on Sunday, with the second wave potentially turning severe—especially across southern and northern parts of the state.
According to the National Weather Service, northern Connecticut should brace for “two rounds of strong thunderstorms and heavy rain” on Sunday. The first system is expected to sweep through during the morning, focusing on areas near the south coast, where heavy downpours and localized street flooding may become the primary concern. Later in the afternoon and evening, a second round of storms could develop, and this one brings greater potential for damaging winds.
Down in southern Connecticut, the forecast echoes similar risks. The National Weather Service notes that “isolated showers and storms are possible late Saturday night, followed by a more organized batch Sunday afternoon as a cold front pushes through. This second round could be severe, with wind gusts over 58 mph, along with intense rainfall in some spots.
Saturday’s conditions, meanwhile, are expected to be comfortable and dry, with sunshine dominating the skies. Meteorologists from WFSB 3 TV described the day as “feeling amazing,” noting that temperatures will be 10 to 15 degrees cooler than they were on Friday. However, clouds will begin building in the afternoon as a warm front moves in from the west, setting the stage for overnight activity.
On Sunday morning, expect a first round of showers and isolated storms, especially along the shoreline. This system could bring gusty winds, lightning, and heavy bursts of rain in scattered areas. Humidity levels will briefly spike following the morning storms, followed by a temporary lull in the activity.
After 2 PM—possibly even closer to 4 PM—a second wave of storms is forecast to arrive. These storms may be strong to severe, with frequent lightning, damaging wind gusts, and even the chance for large hail. Flash flooding in poor drainage areas is also on the table. While the tornado threat remains very low, it is not entirely zero, according to WFSB 3 TV meteorologists.
Southern Connecticut Forecast Overview (National Weather Service)
Today, Saturday: Expect sunny skies with a high around 83°F (28°C). Winds will be light from the south at 5 to 7 mph.
Tonight: Clouds increase, with a 30% chance of showers and thunderstorms after 2 AM. Low around 72°F (22°C) with a light south breeze.
Sunday: Partly sunny and hot, with highs reaching 89°F (32°C) and heat index values as high as 97°F (36°C). Thunderstorms likely after 2 PM, with a 60% chance of precipitation. Rainfall amounts could total up to half an inch.
Sunday Night: Storms likely before 8 PM, then clearing skies. Overnight low around 67°F (19°C), with northwest winds at 7 mph. Chance of rain: 60%.
Monday: Back to sunny skies, with highs near 83°F (28°C) and a northwest breeze.
Tuesday: More sunshine and a bit cooler, with a high around 80°F (27°C).
Northern Connecticut Forecast Overview (National Weather Service)
Today, Saturday: Sunny with temperatures climbing to 86°F (30°C). Light southwest winds at 5 to 8 mph by afternoon.
Sunday: Mostly cloudy, with highs near 88°F (31°C). Thunderstorms likely after 2 PM, and some could be severe. Rain chances at 70%, with potential totals between 0.1 and 0.25 inches—more under stronger cells.
Sunday Night: Storms taper off by 8 PM, leaving mostly clear skies and a low near 62°F (17°C). Winds shift to the north around 7 mph. Chance of rain drops to 30%.
Monday: Expect clear skies and a high around 79°F (26°C) with a cool north breeze.
Tuesday: Another sunny, mild day, with temperatures peaking near 80°F (27°C).
