A hazardous weather outlook has been issued for southern Connecticut for Sunday due to the potential for heavy rainfall and scattered flooding.
The National Weather Service issued the alert for Fairfield, New Haven, Middlesex, and New London counties.
"An approaching frontal system acting on a very moist air mass may produce heavy rainfall capable of causing isolated to scattered flooding Sunday afternoon into Sunday evening," the National Weather Service said Friday.
In the short term, both today and Saturday are expected to be dry, with plenty of sunshine both days.
Highs today will reach the low 80s, while Saturday will be cooler, with highs around 70, forecasters said.
Saturday will be the best day of the weekend for outdoor plans, and it will become increasingly cloudy Saturday night into early Sunday, according to meteorologists.
The National Weather Service predicts rain will begin Sunday afternoon around 2 p.m. and continue overnight.
WFSB is calling Sunday a "First Alert Weather Day," due to the rain and expected impact on outdoor plans.
"In addition to rain that could be heavy at times, it will be cool with highs in the 60s," WFSB reported. "We'll be monitoring where the axis or bullseye of heaviest rain sets up. If it ends up across CT, the threat for flooding would increase."
The rain is expected to taper off early Monday, according to the National Weather Service.
Looking ahead to the early workweek, it will be on the cooler side, with daytime highs in the 60s on Monday and again on Tuesday, when fall arrives.
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Here are the forecast details for southern Connecticut via the National Weather Service:
Today: Sunny, with a high near 80. North wind 7 to 9 mph.
Tonight: Partly cloudy, with a low around 52. Northeast wind 7 to 10 mph.
Saturday: Mostly sunny, with a high near 69. Northeast wind 5 to 9 mph becoming east in the afternoon.
Saturday Night: Mostly cloudy, with a low around 56. Southeast wind 3 to 5 mph.
Sunday: Showers, mainly after 2 p.m. High near 68. Southeast wind 6 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night: Showers. Low around 57. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.
Monday: Showers likely, mainly before 8 a.m. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
Monday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 63.
Here are the forecast details for northern Connecticut via the National Weather Service:
Today: Sunny, with a high near 82. North wind 6 to 9 mph, with gusts as high as 20 mph.
Tonight: Partly cloudy, with a low around 49. North wind around 8 mph.
Saturday: Mostly sunny, with a high near 69. North wind 5 to 7 mph becoming calm in the afternoon.
Saturday Night: Partly cloudy, with a low around 48. Southeast wind 3 to 6 mph.
Sunday: Showers likely, mainly after 1 p.m. Mostly cloudy, with a high near 64. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night: Showers, mainly before 2 a.m. Patchy fog before 2 a.m. Low around 53. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 80%.
Monday: A chance of showers before 9 a.m. Partly sunny, with a high near 66. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night: A chance of showers after 9 p.m. Mostly cloudy, with a low around 50. Northeast wind 7 to 9 mph. Chance of precipitation is 30%.
Tuesday: A chance of showers. Mostly cloudy, with a high near 62. Northeast wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
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